The Internet Pinball Serial Number Database or IPSND collects serial numbers of pinball machines and publishes a database of these on the Internet. Our goal is to make available a registration of all pinball machines in existence and allow tools for slicing, dicing and visualization of the data.

Games: 6,138  Serials: 44,113  Visitors: 20,982,987  Members: 4,211  Photos: 21,551  Lat/Lng: 21,826  Masks: 3,151(51.34 %)  Traits: 471  Nudges: 109,807  Backglasses: 1,852
  Most Serials: Twilight Zone(929)  Most Submissions: Rod McLarge(2,973)  Most Points: Rod McLarge(25,428)  Highest Quality: EM-fan(9.14)  Most Nudges: King of Pinball(14,660)
High Speed - IPSND/IPDB No. 1176 - January 1986
Backglass Image
Manufacturer: Williams Electronic Games, Inc., a subsidiary of WMS Inc.
Players: 4
MPU: Williams System 11
Production Run: 17,080
Game Type: Solid State Electronic (SS)
Model: 541
Submissions: 456 serials of 17,080 (2.67 %)
Coverage help:

Coverage is a mathematical interpretation of the serial numbers that have been submitted so far. The term 'coverage' relates to the amount of the production run that has been 'covered' in the given submissions.

There are two coverage methods shown, each has a different approach of calculating an guess on the number of games produced by analysing the currently submitted serial numbers.

Linear: Linear coverage simply looks at the highest serial number and subtracts from it the smallest serial number to estimate the number of games produced. For some games, this works fine because the serial numbers were sequential and without gaps (Early Bally, Early Stern, etc). However, this approach starts to fail quickly for games that serial numbers are part of a bigger numbering scheme (Williams pre 1984, Current Stern) or that intentially had gaps/skips in the numbering sequence(Gottlieb post 1960). If you see a linear coverage number that is higher than the known production run, it is probably not the best way to look at the serial range and you should look at the clustered approach below.

Clustered: Clustered coverage assumes that there are gaps/skips in the serial sequence for a game. It groups the serial numbers together based upon how close they are to the next serial number in the sequence. If they fall within a certain threshold then the SerialBot assumes that there are valid serial numbers between the two. If they are far enough apart, then the SerialBot assumes this is a gap. Once all the gaps and groups are determined, it sums up all the linear ranges in each group. This way, if a sample run of games started at 15,000-15,100 and the production games started at 17,000 onwards, it would assume that the serial numbers between 15,100-17,000 were a gap an are not counted. Using this method, as more serial numbers are submitted the gap analysis will get more accurate.

44,115 (258.28 %) linear / 18,141(106.21 %) in 3 clusters 854 wide.
Norway: 1 _serials Poland: 1 _serials Korea, Democratic People's Republic of: 1 _serials Luxembourg: 1 _serials South Africa: 1 _serials Austria: 1 _serials Belgium: 1 _serials United Kingdom: 1 _serials Croatia: 1 _serials Finland: 2 _serials Denmark: 2 _serials Japan: 2 _serials New Zealand: 2 _serials Australia: 2 _serials Sweden: 2 _serials Uruguay: 3 _serials France: 3 _serials Hungary: 4 _serials Netherlands: 9 _serials Germany: 14 _serials Canada: 17 _serials United States: 415 _serials United States: 415 _serials Norway: 1 _serials Poland: 1 _serials Korea, Democratic People's Republic of: 1 _serials Luxembourg: 1 _serials South Africa: 1 _serials Austria: 1 _serials Belgium: 1 _serials United Kingdom: 1 _serials Croatia: 1 _serials Finland: 2 _serials Denmark: 2 _serials Japan: 2 _serials New Zealand: 2 _serials Australia: 2 _serials Sweden: 2 _serials Uruguay: 3 _serials France: 3 _serials Hungary: 4 _serials Netherlands: 9 _serials Germany: 14 _serials United States: 415 _serials
Parts: 10 _serials Unknown: 39 _serials Complete: 437 _serials Complete: 437 _serials Parts: 10 _serials Unknown: 39 _serials Complete: 437 _serials
Body Only: 3 _serials Other Parts: 149 _serials Complete Game: 334 _serials Complete Game: 334 _serials Body Only: 3 _serials Other Parts: 149 _serials Complete Game: 334 _serials
Cluster Serial Number SerialBot Submitted By Country Game Part

Submit a new Game Trait

The following traits help

Game Traits are properties for an individual game that you would like to see tracked along with the other information gathered for a serial number submission. Some examples of existing traits are... Joust: Black or Blue bottom Arch, Black Knight: Faceted Inserts or Normal Inserts, Twilight Zone: 3rd Magnet Installed or not.

have been submitted for this game...

Field NameDescriptonSubmitted BySubmit DateSubmitted
There are no traits submitted for this game

Cluster Serial Number Country

This section lists any known game part serials that happen to match this game's serial mask (if defined). What this can tell you is if a game has any orphaned parts that might exist in other machines. This generally applies to CPU/MPU boards, Driver Boards, Display boards etc that are easily moved from game to game. Repair shops and distributors often robbed parts from other 'scrap' games laying around in a pinch if they were not able to fix the original part or of the original part was damaged beyond repair. If serials start showing up in the database as 'game parts', there is potentially a good chance that that game has been parted out completely, which is unfortunate. It is becoming more and more common for people to part out games and sell them on ebay simply because the seller can often make more money that way.... Please do not sacrifice complete games for money!!!

SerialBotSerial NumberTypeSubmitted ByCountryDetails
15932 54176098 Sound Board Pinball Pete United States flag United States
29684 54176128 Sound Board John Vorwerk United States flag United States
47185 54176158 Display/Driver Pinball Pete United States flag United States
20934 54176185 Power Supply Dave Ferguson United States flag United States
41062 54176201 Display/Driver Rod McLarge Hungary flag Hungary
48979 54179831 Power Supply Rod McLarge Canada flag Canada
48911 54179831 Power Supply Fun House United States flag United States
47403 54179951 Display/Driver Rod McLarge United States flag United States
9210 54180088 MPU/CPU John Duchi United States flag United States
24658 54180119 Display/Driver 4By United States flag United States
32351 54180138 Display/Driver Rod McLarge United States flag United States
50198 54181156 Display/Driver Dennis Braun United States flag United States
30716 54181269 Sound Board John Vorwerk United States flag United States
27303 54181274 Solenoid Driver John Vorwerk United States flag United States
47948 54181322 Sound Board Rod McLarge United States flag United States
24663 54181419 MPU/CPU 4By United States flag United States
10927 54181485 Flipper Board John Duchi United States flag United States
49731 54181486 Flipper Board Dennis Braun United States flag United States
48831 54181492 Power Supply Rod McLarge United States flag United States
48819 54181492 Sound Board Rod McLarge United States flag United States
48065 54181492 Sound Board Dennis Braun United States flag United States
33282 54181520 Display/Driver John Vorwerk United States flag United States
34604 54181605 Power Supply Pinball Pete United States flag United States
30418 54181701 Power Supply Nick Alongi United States flag United States
30417 54181701 MPU/CPU Nick Alongi United States flag United States
21001 54181723 Sound Board John Vorwerk United States flag United States
49579 54181839 Other/Unknown Fun House United States flag United States
35030 54181894 Sound Board John Vorwerk United States flag United States
34314 54181894 Sound Board Rod McLarge United States flag United States
37730 54181941 MPU/CPU Kelly Moore United States flag United States
21415 54182058 Sound Board John Vorwerk United States flag United States
38030 54182087 MPU/CPU Rod McLarge United States flag United States
30862 54182481 Display/Driver Rod McLarge Canada flag Canada
48536 54182546 Display/Driver Rod McLarge United States flag United States
43077 54182618 Display/Driver Pinball Pete United States flag United States
34282 54182630 Display/Driver Rod McLarge United States flag United States
54576 54182813 Display/Driver Dennis Braun United States flag United States
31107 54182966 Display/Driver Rod McLarge United States flag United States
32637 54183091 Display/Driver Rod McLarge United States flag United States
48230 54183140 MPU/CPU Pinball Pete United States flag United States
43076 54183196 Display/Driver Pinball Pete United States flag United States
24662 54183222 Power Supply 4By United States flag United States
21977 54183280 Sound Board John Vorwerk United States flag United States
54500 54184170 Display/Driver Dennis Braun United States flag United States
47062 54184175 MPU/CPU Pinball Pete United States flag United States
10575 54184211 Display/Driver Dan Gutchess United States flag United States
50693 54184245 Display/Driver Dennis Braun United States flag United States
47640 54184245 Flipper Board Dennis Braun United States flag United States
47402 54184245 Display/Driver Rod McLarge United States flag United States
37930 54184297 Coin Door Rod McLarge United States flag United States
52755 54184380 Display/Driver Dennis Braun United States flag United States
27820 54184437 Display/Driver Pistol Pete United States flag United States
43169 54184589 Flipper Board Pinball Pete United States flag United States
17387 54184807 Sound Board John Vorwerk United States flag United States
42144 54184860 Power Supply John Vorwerk United States flag United States
16566 54184874 Sound Board Pinball Pete United States flag United States
32801 54186242 Display/Driver Rod McLarge United States flag United States
15933 54186325 Sound Board Pinball Pete United States flag United States
35754 54186345 Display/Driver Rod McLarge Canada flag Canada
44892 54186441 Power Supply Rod McLarge United States flag United States
33797 54186490 Display/Driver Rod McLarge United States flag United States
47186 54186547 Display/Driver Pinball Pete United States flag United States
20933 54186679 Display/Driver Dave Ferguson United States flag United States
29629 54187077 Solenoid Driver John Vorwerk United States flag United States
41870 54187092 MPU/CPU Rod McLarge United States flag United States
20478 54187106 Flipper Board John Vorwerk United States flag United States
36156 54187107 Sound Board Pinball Pete United States flag United States
42492 54187151 Sound Board Rod McLarge United States flag United States
42166 54187423 Power Supply Rod McLarge United States flag United States
8629 54188006 Other/Unknown Bill Ung United States flag United States
34856 54188171 Sound Board Pinball Pete United States flag United States
35129 54188176 Flipper Board John Vorwerk United States flag United States
34928 54188176 Sound Board John Vorwerk United States flag United States
34793 54188176 Power Supply John Vorwerk United States flag United States
33793 54188176 MPU/CPU Rod McLarge United States flag United States
33856 54188200 Sound Board Pistol Pete United States flag United States
47642 54188207 Sound Board Dennis Braun United States flag United States
35942 54188213 Power Supply Pistol Pete United States flag United States
49574 54188312 Display/Driver Fun House United States flag United States
32106 54188349 Display/Driver Rod McLarge United States flag United States
50495 54188493 Display/Driver Dennis Braun United States flag United States
54575 54188674 Display/Driver Dennis Braun United States flag United States
37859 54188689 Power Supply Rod McLarge United States flag United States
42151 54188971 Sound Board John Vorwerk United States flag United States
32161 54188992 MPU/CPU Rod McLarge United States flag United States
47991 54189015 Coin Door Dennis Braun United States flag United States
10811 54189079 Sound Board John Duchi United States flag United States
50116 54189086 MPU/CPU Fun House United States flag United States
47597 54189162 Sound Board Pinball Pete United States flag United States
35943 54189187 Flipper Board Pistol Pete United States flag United States
20941 54189197 Display/Driver John Vorwerk United States flag United States
33794 54189295 MPU/CPU Rod McLarge United States flag United States
31111 54189382 Display/Driver Rod McLarge United States flag United States
27519 54189422 Display/Driver John Vorwerk United States flag United States
8630 54189448 Other/Unknown Bill Ung United States flag United States
37904 54189485 MPU/CPU Pinball Pete United States flag United States
27866 54190054 Display/Driver John Vorwerk United States flag United States
52735 54190107 Sound Board Rod McLarge Canada flag Canada
47643 54190154 Power Supply Dennis Braun United States flag United States
49335 54190184 Flipper Board Dennis Braun United States flag United States
36367 54190239 Display/Driver Adam United States flag United States
43078 54190308 Sound Board Pinball Pete United States flag United States
30917 54190430 MPU/CPU John Vorwerk United States flag United States
43082 54190593 Display/Driver Pinball Pete United States flag United States
29673 54190846 Display/Driver John Vorwerk United States flag United States
36349 54191117 Flipper Board Rod McLarge United States flag United States
34855 54191117 Flipper Board Pinball Pete United States flag United States
24661 54191287 Sound Board 4By United States flag United States
11218 54191457 Power Supply Dan Gutchess United States flag United States
37767 54191537 Sound Board Pinball Pete United States flag United States
47596 54191575 Sound Board Pinball Pete United States flag United States
11440 54191592 Display/Driver Pinball Pete United States flag United States
32174 54191609 Sound Board Rod McLarge United States flag United States
32417 54191611 Sound Board John Vorwerk United States flag United States
54574 54191629 Power Supply Dennis Braun United States flag United States
49732 54191663 Display/Driver Dennis Braun United States flag United States
51147 54192289 MPU/CPU Fun House United States flag United States
51461 54192292 MPU/CPU Fun House United States flag United States
31897 54192509 MPU/CPU Multigame Gert-Jan de Haan Netherlands flag Netherlands
50559 54192774 Flipper Board Dennis Braun United States flag United States
36517 54192840 Power Supply John Vorwerk United States flag United States
34678 54192840 Power Supply Rod McLarge United States flag United States
35548 54193502 MPU/CPU Rod McLarge United States flag United States
32847 54193502 Display/Driver Rod McLarge United States flag United States
23208 54193631 Sound Board John Vorwerk United States flag United States
34315 54193659 Display/Driver Rod McLarge United States flag United States
43170 54193726 Display/Driver Pinball Pete United States flag United States
43079 54193728 Sound Board Pinball Pete United States flag United States
20755 54193776 Power Supply Shawn Christian United States flag United States
39258 54193852 Display/Driver Rod McLarge United States flag United States
52861 54193884 Coin Door Dennis Braun United States flag United States
27511 54193884 Sound Board John Vorwerk United States flag United States
27509 54193884 Sound Board Jess Askey United States flag United States
47247 54193926 Sound Board Pinball Pete United States flag United States
43081 54194055 Display/Driver Pinball Pete United States flag United States
49758 541I76422 Other/Unknown Fun House Korea, Democratic People's Republic of flag Korea, Democratic People's Republic of
10920 541I77128 Display/Driver Leo Stelloo Netherlands flag Netherlands
51174 541I77249 Power Supply Dennis Braun United States flag United States
47925 541I77610 Flipper Board Sodamin stefan Austria flag Austria
13611 541I85221 Sound Board Alexander Moebius Uruguay flag Uruguay
10919 541I85501 MPU/CPU Leo Stelloo Netherlands flag Netherlands
49397 541I85663 Sound Board Fun House Germany flag Germany
42067 541I87638 Display/Driver Antti Peltonen Hungary flag Hungary
52814 541I89611 Sound Board Fun House Germany flag Germany
48920 541I92047 Power Supply Fun House United States flag United States
13612 541I93019 MPU/CPU Alexander Moebius Uruguay flag Uruguay
31896 541I93232 Power Supply Multigame Gert-Jan de Haan Netherlands flag Netherlands
42448 541I93285 Flipper Board Rod McLarge Poland flag Poland
26935 541I93395 Other/Unknown Antti Peltonen Finland flag Finland

This section lists any known information about how to physically find serial numbers on games created by this manufacturer. For all manufacturer tips, please visit the Serial Tips Page . (Please do not post serial numbers here on this form.)

Posted 1/11/2007 11:54:45 PM by Bill Ung

Newer Williams and Williams/Bally games have cute little stickers everywhere. This began with System 9 games (as far as I know) and include game ID number information, as well as the serial number. There are two styles:

  • The blue/grey and white stickers ran through the Hurricane era. These include the official game ID number (ie: 541 or 50018), separated from the actual serial number by a few spaces. Early games, till about the end of 1986, had five-digit serial numbers. Since then, serial number have always been six digits.
  • The white stickers include encoded game ID numbers. Well, the ID numbers aren't identical to the one you'll find in the ROM, but it DOES match the game ID number listed on the back of the machine. The number may change based on country. This is an item still being debated somewhat.

Overall, you'll find these stickers on the fronts of the cabinets, on top of the head, on the back of the cabinet (along with an encoded manufacturing date), insi

Posted 4/28/2008 2:40:04 PM by Jim West
Pinball2000 machines have two parts each with their own serial number. The base serial number is for the playfield cabinet. This serial number is for the top unit of the pinball.
Posted 12/20/2008 10:07:35 PM by MARK SPENCER
OPEN COIN DOOR, LOOK TO RIGHT , MFG STICKER SHOULD BE ON SIDE.
Posted 2/23/2009 9:24:15 PM by Richard Harvey
Game Date Stamp for BK2K under backbox with head down.
Members can submit new tips on how to find serial numbers! Sign up for a free membership here!

This game has the following serial number formats defined in the database. As serial numbers are sumbitted, trends are recognized and defined or information about a serial number format is collected through historical information.

TypeExamplesRegExMaskLowerLimitUpperLimitAutoAssignable
Production Game 54181514, 54194015, 54189458 ^(541)(?<sortdata>[0-9][0-9][0-9][0-9][0-9])$ True
International Game 541I89891, 541I89891, 541I88814 ^(541)(I)(?<sortdata>[0-9][0-9][0-9][0-9][0-9])$ True
Experimental Game 541X78398 ^(541)(X)(?<sortdata>[0-9][0-9][0-9][0-9][0-9])$ True


The Serial Bot Summary information here gives a detailed explanation of the Serial Bot analysis for this specific game. The theory behind the Serial Bot is this...

Every game has many many serial number submissions, the goal of the IPSND is not to guarantee that *all* information is 100% correct but that over time, the system should automatically devalue inaccurate submissions while increasing the value of correct submissions.

You may click on the SerialBot score of any submission to see how it was calculated.

SerialBot Color Codes:
- Not Validated The serial number submission has not yet been validated by the submitter via email.
- Unknown There is no known information on the serial number format for this game yet. As more submissions are received we can start to make a best guess on the serial number format.
- Good If a serial does not fail any of the tests for a status of Warning or Bad, then it is good.
- Suspect A serial will have a suspect status if the format is technically correct but there is something wrong with the data. Examples might be that the number might be too high or low for the known range of serials for this game.
- Bad If a game has a serial number definition mask defined for it, then a serial may be marked as 'bad' if the number does not validate agains the mask. Masks are created for games by looking at known serial number formats and consist of a regular expression to define the format of a game serial.

SerialBot Scores:
1 Point Awarded if the serial number has a game assigned to it. This autoatically makes submissions with a known game more valuable than submissions without a known game.
1 Point Awarded if the serial number has been 'verified' by the submitter. A submission is 'verifed' if the submitter clicks on the link in the email sent to them for each submission. The basis for this rule is that submissions by people that do not take the time to respond to the email might be entering garbage data and/or giving fake email addresses. However, it is common for 'verification' emails to get stuck in spam filters etc, so, members may have 'verification' emails re-sent at any time.
1 Point Awarded if the submitted serial number matches one of the predefined serial number masks for this game.
1 Point Awarded if the serial number was marked as 'Physically Viewed' during the submission process. This is an interesting distinction as there are many times that serial numbers are submitted off owners lists, Ebay auction, etc. While these serial numbers are valuable, they may also be innacurate. In comparison, Physically Viewed serial number submissions are numbers that the submitter has actually been in front of the machine reading the number and then submitting it. Since it is more likely to get a good visual from a physically viewed machine, this gains an extra point.
1 Point If a photo is uploaded with the serial number submission. The submission automatically gains an additional point. Be aware however that this opens the submission up to 'Nudges' by members where even more points can be added or subtracted based upon the quality and accuracy of the photo.
-3 to +3 Points Members can 'Nudge' every sumitted photo once and give it an extra boost of 1 point or take away 1 point depending if the photo matches the submitted serial number. While any number of members may nudge a serial, the nudging can only affect the score by +/- 3 points in either direction.

The following map shows the locations of all serial numbers that were submitted with a geolocation... (click here if map does not show)

Powered By Subgurim(http://googlemaps.subgurim.net).Google Maps ASP.NET

Supported Browsers
Back 5 | Random | Forward 5 | List ]