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: 50,931  Visitors: 30,209,671  Members: 3,748  Photos: 27,818  Lat/Lng: 25,035  Masks: 50,931(819.22 %)  Traits: 504  Nudges: 141,491  Backglasses: 1,862
  Most Serials: Twilight Zone(1,063)  Most Submissions: Dennis Braun(3,591)  Most Points: Rod McLarge(27,988)  Highest Quality: Jim Butler(9.15)  Most Nudges: King of Pinball(18,988)
Terminator 2: Judgment Day - IPSND/IPDB No. 2524 - July 1991
Backglass Image
Manufacturer: Williams Electronic Games, Inc., a subsidiary of WMS Inc.
Players: 4
MPU: Williams WPC (Dot Matrix)
Production Run: 15,202
Game Type: Solid State Electronic (SS)
Model: 50013
Submissions: 375 serials of 15,202 (2.47 %)
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.

208,849 (1,373.83 %) linear / 15,109(99.39 %) in 4 clusters 760 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
11193 50013770245 Sound Board Dan Gutchess United States flag United States
55934 50013770329 MPU/CPU Dennis Braun United States flag United States
48748 50013770462 Sound Board Rod McLarge United States flag United States
52239 50013770523 MPU/CPU Rod McLarge United States flag United States
52105 50013770523 MPU/CPU John Vorwerk United States flag United States
33849 50013770678 Display/Driver Rod McLarge United States flag United States
26880 50013770797 MPU/CPU King of Pinball United States flag United States
8621 50013770886 Other/Unknown Bill Ung United States flag United States
53265 50013771076 MPU/CPU Dennis Braun United States flag United States
50822 50013771186 MPU/CPU Fun House United States flag United States
58118 50013771267 MPU/CPU Larry Le Feuvre United States flag United States
31692 50013771593 MPU/CPU Rod McLarge United States flag United States
34591 50013771632 Sound Board Rod McLarge United States flag United States
60297 50013771760 Display/Driver Fun House United States flag United States
48331 50013771794 Display/Driver Dennis Braun United States flag United States
57164 50013771908 Display/Driver Dennis Braun United States flag United States
57269 50013772360 Display/Driver Dennis Braun United States flag United States
50607 50013772383 Coin Door Dennis Braun United States flag United States
48811 50013772451 Flipper Board Rod McLarge United States flag United States
61921 50013772578 Solenoid Driver Dennis Braun United States flag United States
56569 50013772703 Coin Door Dennis Braun United States flag United States
32684 50013772880 MPU/CPU Rod McLarge United States flag United States
61430 50013772905 Display/Driver Dennis Braun United States flag United States
39257 50013772952 MPU/CPU Rod McLarge United States flag United States
58483 50013773053 Display/Driver Dennis Braun United States flag United States
31729 50013773263 Display/Driver Rod McLarge United States flag United States
23511 50013773272 MPU/CPU John Vorwerk United States flag United States
58458 50013773312 Display/Driver John Vorwerk United States flag United States
57166 50013773312 Display/Driver John Vorwerk United States flag United States
56789 50013773346 Sound Board Dennis Braun United States flag United States
48749 50013773346 Display/Driver Rod McLarge United States flag United States
10737 50013773361 MPU/CPU John Duchi United States flag United States
60315 50013773590 Solenoid Driver Dennis Braun United States flag United States
8604 50013773620 Other/Unknown Bill Ung United States flag United States
31595 50013773844 Sound Board Pistol Pete United States flag United States
56920 50013774025 Coin Door Dennis Braun United States flag United States
58041 50013774135 MPU/CPU Dennis Braun United States flag United States
52209 50013774245 Display/Driver Rod McLarge United States flag United States
29897 50013774314 MPU/CPU Ric Turner United States flag United States
56322 50013774371 Sound Board Dennis Braun United States flag United States
49191 50013774409 Display/Driver Fun House United States flag United States
32690 50013774628 Display/Driver Rod McLarge United States flag United States
62298 50013774779 Sound Board Dennis Braun United States flag United States
60006 50013774780 MPU/CPU Dennis Braun United States flag United States
48040 50013774883 Sound Board Dennis Braun United States flag United States
49964 50013774911 Display/Driver Rod McLarge United States flag United States
36415 50013970011 MPU/CPU Rod McLarge United States flag United States
61962 50013970111 Sound Board Dennis Braun United States flag United States
50692 50013970310 Coin Door Dennis Braun United States flag United States
32687 50013970360 Power Supply Rod McLarge United States flag United States
11383 50013970365 Other/Unknown Dan Gutchess United States flag United States
52237 50013970391 Coin Door Rod McLarge United States flag United States
39805 50013970949 Display/Driver Rod McLarge United States flag United States
48010 50013971051 MPU/CPU Rod McLarge United States flag United States
48039 50013971246 Sound Board Dennis Braun United States flag United States
48038 50013971246 Power Supply Dennis Braun United States flag United States
48037 50013971246 MPU/CPU Dennis Braun United States flag United States
60455 50013I775189 Display/Driver Fun House Italy flag Italy
50211 50013I775424 Display/Driver Fun House Germany flag Germany
56280 50013I776543 MPU/CPU Fun House France flag France
58733 50013I777686 MPU/CPU Fun House Germany flag Germany
49399 50013I777773 Display/Driver Fun House Korea, Democratic People's Republic of flag Korea, Democratic People's Republic of
52924 50013I777802 Sound Board Rod McLarge Germany flag Germany
57428 50013I778135 MPU/CPU Fun House United States flag United States
62338 50013I778460 Sound Board Dennis Braun United States flag United States
59913 50013I778506 Display/Driver Fun House Belgium flag Belgium
48577 50013I778579 Sound Board Dennis Braun United States flag United States
61230 50013I778725 MPU/CPU Fun House Italy flag Italy
50232 50013I779106 Display/Driver Fun House Hungary flag Hungary
31383 50013I779155 Sound Board Antti Peltonen Finland flag Finland
50892 50013I779530 Display/Driver Dennis Braun United States flag United States
36316 50013I779630 MPU/CPU Ric Turner United States flag United States
62190 50013I779780 MPU/CPU Fun House Germany flag Germany
33399 50013I779864 Coin Door PATRICK Belgium flag Belgium
54516 50013I779875 Display/Driver Fun House Netherlands flag Netherlands
31779 50013I965867 Power Supply Multigame Gert-Jan de Haan Netherlands flag Netherlands
21528 50013I975504 Display/Driver John Vorwerk United States flag United States
62373 50013I975595 Display/Driver Fun House United States flag United States
14602 50013I975717 MPU/CPU Matthew LaVoice United States flag United States
14604 50013I975822 MPU/CPU Matthew LaVoice United States flag United States
59964 50013I976012 Solenoid Driver Antti Peltonen Poland flag Poland
35698 50013I977275 Sound Board Rod McLarge United States flag United States
59600 50013I977625 MPU/CPU Fun House Italy flag Italy
62537 50013I977630 MPU/CPU Dennis Braun United States flag United States
20730 50013I977662 Sound Board John Vorwerk United States flag United States
17969 50013I977887 Flipper Board cosimo lo nigro Italy flag Italy
50165 50013I977967 MPU/CPU Rod McLarge Netherlands flag Netherlands

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 50013776545, 50013770019, 50013770039 ^(5[0-9][0-9]13)(?<sortdata>[0-9][0-9][0-9][0-9][0-9][0-9])$ True
International Game 50013I978195, 50013I977922, 50013I976607 ^(5[0-9][0-9]13)(I)(?<sortdata>[0-9][0-9][0-9][0-9][0-9][0-9])$ True
Experimental Game 50013X978195, 50013X977922, 50013X976607 ^(5[0-9][0-9]13)(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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