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: 6,217  Serials: 50,445  Visitors: 29,210,722  Members: 3,791  Photos: 27,371  Lat/Lng: 24,982  Masks: 50,445(811.40 %)  Traits: 503  Nudges: 139,241  Backglasses: 1,862
  Most Serials: Twilight Zone(1,049)  Most Submissions: Dennis Braun(3,385)  Most Points: Rod McLarge(27,988)  Highest Quality: Jim Butler(9.15)  Most Nudges: King of Pinball(18,655)
Star Trek: The Next Generation - IPSND/IPDB No. 2357 - November 1993
Backglass Image
Manufacturer: Williams Electronic Games, Inc., a subsidiary of WMS Inc.
Players: 4
MPU: Williams WPC (DCS)
Production Run: 11,728
Game Type: Solid State Electronic (SS)
Model: 50023
Submissions: 534 serials of 11,728 (4.55 %)
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.

339,171 (2,891.98 %) linear / 69,945(596.39 %) in 124 clusters 586 wide.
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
31600 50223401111 MPU/CPU Pistol Pete United States flag United States
53298 50223453091 MPU/CPU Rod McLarge United States flag United States
60983 50223493922 MPU/CPU Fun House Germany flag Germany
57041 50223494022 Coin Door Wim Corbeij Netherlands flag Netherlands
11323 50323446722 MPU/CPU John Duchi United States flag United States
50573 50423362871 Display/Driver Fun House Netherlands flag Netherlands
54708 50423363011 MPU/CPU Dennis Braun United States flag United States
43760 50423365501 Sound Board Rod McLarge United States flag United States
49168 50423374911 Coin Door Dennis Braun United States flag United States
57361 50623403231 Solenoid Driver Dennis Braun United States flag United States
56595 50723274692 Flipper Board Fun House Belgium flag Belgium
32799 50723298312 Display/Driver Rod McLarge United States flag United States
60519 50723372782 MPU/CPU Fun House Germany flag Germany
49629 51023274712 Display/Driver Fun House Korea, Democratic People's Republic of flag Korea, Democratic People's Republic of
61454 51023276402 Flipper Board Fun House United States flag United States
48557 51023281062 MPU/CPU Dennis Braun United States flag United States
32905 51023345962 MPU/CPU Rod McLarge United States flag United States
33063 51023375361 Sound Board Pat Herbert United States flag United States
58866 51023388231 Display/Driver Dennis Braun United States flag United States
33061 51023396581 MPU/CPU Pat Herbert United States flag United States
32591 51023490612 Display/Driver Rod McLarge United States flag United States
51455 51023492702 Display/Driver Fun House Korea, Democratic People's Republic of flag Korea, Democratic People's Republic of
31751 51123449352 Solenoid Driver Antti Peltonen Finland flag Finland
48929 51323289292 Flipper Board Fun House Korea, Democratic People's Republic of flag Korea, Democratic People's Republic of
61290 51323289922 Display/Driver Fun House Netherlands flag Netherlands
24359 51323396481 Other/Unknown pinballservice-nl Netherlands flag Netherlands
60984 51323403561 Display/Driver Fun House Germany flag Germany
36351 51423435911 Display/Driver Rod McLarge United States flag United States
60451 51423446831 Display/Driver Fun House Italy flag Italy
59949 52023351391 Sound Board Fun House Germany flag Germany
51765 52023371111 MPU/CPU Rod McLarge United States flag United States
54815 52023408701 Display/Driver Fun House France flag France
31905 52023447702 Display/Driver Pistol Pete United States flag United States
59456 52123375901 MPU/CPU Dennis Braun United States flag United States
32468 52123419921 MPU/CPU Antti Peltonen Sweden flag Sweden
59638 52223315122 MPU/CPU Fun House Italy flag Italy
37889 52523306192 Flipper Board Antti Peltonen Finland flag Finland
47788 52523404311 Display/Driver Rod McLarge United States flag United States
59337 52523421431 Flipper Board Fun House Netherlands flag Netherlands
56807 52523494432 Coin Door Dennis Braun United States flag United States
59714 52523549482 MPU/CPU Dennis Braun United States flag United States
51338 52823272772 Display/Driver Fun House United States flag United States
61449 53323274002 Sound Board Dennis Braun United States flag United States
52107 53323303082 Display/Driver John Vorwerk United States flag United States
34786 53323308402 MPU/CPU Rod McLarge Canada flag Canada
56299 53323316282 Display/Driver Fun House United States flag United States
61618 53323316692 MPU/CPU Fun House United States flag United States
60337 53323324082 MPU/CPU Dennis Braun United States flag United States
27769 53323325352 Display/Driver Pistol Pete United States flag United States
56704 53323325442 MPU/CPU John Vorwerk United States flag United States
50301 53323366882 Sound Board Fun House United States flag United States
61218 53323368462 Display/Driver Dennis Braun United States flag United States
58558 53323371992 Display/Driver Dennis Braun United States flag United States
60665 53323416121 Display/Driver Fun House United States flag United States
61377 53323417611 MPU/CPU Dennis Braun United States flag United States
17384 53323422641 Solenoid Driver John Vorwerk United States flag United States
10862 53323422751 Dan Gutchess United States flag United States
22385 53323424911 MPU/CPU Elvira United States flag United States
52168 53323425251 Display/Driver Rod McLarge United States flag United States
61208 53323426551 Flipper Board Dennis Braun United States flag United States
10685 53323429111 Solenoid Driver John Duchi United States flag United States
17406 53323429201 Display/Driver John Vorwerk United States flag United States
49441 53323429521 MPU/CPU Fun House United States flag United States
39276 53323434371 Display/Driver Rod McLarge United States flag United States
59713 53323435651 Flipper Board Dennis Braun United States flag United States
61696 53323437811 Display/Driver Fun House United States flag United States
34923 53323440921 Sound Board John Vorwerk United States flag United States
24478 53323440921 Display/Driver John Vorwerk United States flag United States
61688 53323444451 Flipper Board Dennis Braun United States flag United States
34579 53323446181 Coin Door Rod McLarge United States flag United States
61670 53323450131 Solenoid Driver Dennis Braun United States flag United States
28737 53323451671 Sound Board John Vorwerk United States flag United States
58111 53323452121 MPU/CPU Dennis Braun United States flag United States
57223 53323457071 Display/Driver Fun House United States flag United States
56295 53323459001 Flipper Board Dennis Braun United States flag United States
61872 53323463171 Sound Board Dennis Braun United States flag United States
59458 53323480021 Flipper Board Dennis Braun United States flag United States
52477 53323481961 Display/Driver Fun House United States flag United States
26542 53323483111 Display/Driver John Vorwerk United States flag United States
34785 53323496182 Display/Driver Rod McLarge Canada flag Canada
32163 53323540012 MPU/CPU Rod McLarge United States flag United States
61672 53323540582 Display/Driver Dennis Braun United States flag United States
48149 53323541942 Sound Board Dennis Braun United States flag United States
42167 53323545992 MPU/CPU Rod McLarge United States flag United States
42142 53323545992 MPU/CPU John Vorwerk United States flag United States
44899 53423354761 Display/Driver Rod McLarge United States flag United States

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 50223394022, 50723385201, 50723401941 ^(5[0-9][0-9]23)(?<sortdata>[0-9][0-9][0-9][0-9][0-9][0-9])$ True
International Game 53523I310321, 53523I310311, 53523I211152 ^(5[0-9][0-9]23)(I)(?<sortdata>[0-9][0-9][0-9][0-9][0-9][0-9])$ True
Experimental Game 53523X310321, 53523X310311, 53523X211152 ^(5[0-9][0-9]23)(X)(?<sortdata>[0-9][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...


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