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: 6,703  Serials: 70,534  Visitors: 81,533,316  Members: 5,788  Photos: 45,945  Lat/Lng: 39,204  Masks: 70,534(1,052.28%)  Traits: 578  Nudges: 232,981  Backglasses: 1,865
  Most Serials: Twilight Zone(1,351)  Most Submissions: Dennis Braun(6,157)  Most Points: Dennis Braun(45,844)  Highest Quality: The Knight(17.00)  Most Nudges: pinballservice-nl(29,869)
World Cup Soccer - IPSND/IPDB No. 2811 - February 1994
Backglass Image
Manufacturer: Midway Mfg. Co., a subsidiary of WMS Industries, Inc.
Players: 4
MPU: Williams WPC Security (WPC-S)
Production Run: 8,743
Game Type: Solid State Electronic (SS)
Model: 50031
Submissions: 395 serials of 8,743 (4.52%)
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.

512,446 (5,861.22%) linear / 9,698(110.92%) in 4 clusters 437 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
50986 50231100845 Sound Board Dennis Braun United States flag United States
59587 50231102071 Display/Driver Fun House Germany flag Germany
58668 50231104666 Display/Driver Fun House Netherlands flag Netherlands
64916 50231105016 Display/Driver Fun House Germany flag Germany
57200 50231105178 Coin Door Dennis Braun United States flag United States
33859 50231105469 MPU/CPU Pistol Pete United States flag United States
48832 50231105470 Sound Board Rod McLarge United States flag United States
81688 50231105631 Display/Driver Alexander Visotin Australia flag Australia
65682 50231105715 Display/Driver Fun House Germany flag Germany
57083 50231105724 MPU/CPU Fun House Sweden flag Sweden
71285 50231105893 Display/Driver Fun House Italy flag Italy
50881 50231107582 Display/Driver Fun House United States flag United States
50037 50231107851 MPU/CPU Fun House Germany flag Germany
63694 50231107912 Display/Driver Fun House Germany flag Germany
53067 50431106568 Coin Door morgan cluppel France flag France
78545 50631102515 Solenoid Driver Alexander Visotin Australia flag Australia
76654 50631102567 Flipper Board Alexander Visotin Australia flag Australia
72667 50631107427 Sound Board Alexander Visotin Australia flag Australia
49643 51031101750 Display/Driver Fun House Korea, Democratic People's Republic of flag Korea, Democratic People's Republic of
27828 51031101864 Display/Driver Pistol Pete United States flag United States
76059 51031102599 Display/Driver Fun House Italy flag Italy
57268 51031102868 Display/Driver Dennis Braun United States flag United States
67822 51031102869 Sound Board Fun House Italy flag Italy
66615 51031102869 Other/Unknown Fun House Italy flag Italy
11417 51031103515 Display/Driver John Duchi United States flag United States
61078 51031107140 Display/Driver Fun House France flag France
80671 51031107370 Display/Driver strobey United Kingdom flag United Kingdom
71302 51031107370 MPU/CPU Clive Pedersen United Kingdom flag United Kingdom
37963 51131105437 MPU/CPU Rod McLarge United States flag United States
54833 51131105509 MPU/CPU Antti Peltonen Finland flag Finland
58664 51331104106 Display/Driver Fun House Netherlands flag Netherlands
57186 51331104417 Flipper Board Fun House Netherlands flag Netherlands
76480 51431100065 Display/Driver Fun House Italy flag Italy
66636 51431100290 Display/Driver Fun House Italy flag Italy
67153 51431100419 Display/Driver Dennis Braun United States flag United States
56930 51431100861 Flipper Board Fun House United States flag United States
80654 51431102656 MPU/CPU Fun House Italy flag Italy
73851 51431103662 Display/Driver Alexander Visotin Australia flag Australia
76381 51431103836 Flipper Board Fun House Italy flag Italy
70788 51431104386 Display/Driver Fun House Italy flag Italy
67629 51431104573 Display/Driver Fun House Italy flag Italy
66621 51431104586 Flipper Board Fun House Italy flag Italy
56750 51431104655 Sound Board Fun House Netherlands flag Netherlands
67622 51431104705 Display/Driver Fun House Italy flag Italy
59545 51431104771 Display/Driver Fun House Italy flag Italy
76721 51531103330 Display/Driver Alexander Visotin Australia flag Australia
27799 516281 Other/Unknown Pistol Pete United States flag United States
74674 52031101031 Sound Board CasaSchiller Germany flag Germany
64962 52031103164 Display/Driver Fun House Germany flag Germany
48755 52131105656 Flipper Board Rod McLarge United States flag United States
65240 52331105078 Display/Driver Fun House Germany flag Germany
60815 52531100137 Sound Board Dennis Braun United States flag United States
76392 52531101695 Display/Driver Fun House Italy flag Italy
29156 52531102295 Sound Board Antti Peltonen Sweden flag Sweden
49628 52531102460 Display/Driver Fun House Korea, Democratic People's Republic of flag Korea, Democratic People's Republic of
11585 52531103447 MPU/CPU John Duchi United States flag United States
48752 52531104087 Sound Board Rod McLarge United States flag United States
33517 52531104107 Solenoid Driver Antti Peltonen Sweden flag Sweden
70728 52531105844 Display/Driver Fun House Slovenia flag Slovenia
69209 52831100934 Display/Driver Fun House Italy flag Italy
60721 52831100938 Sound Board Fun House United States flag United States
31741 53331100155 Display/Driver Rod McLarge United States flag United States
49169 53331101843 MPU/CPU Fun House Colombia flag Colombia
64801 53331102348 Sound Board Dennis Braun United States flag United States
57545 53331102655 Sound Board Dennis Braun United States flag United States
64402 53331103798 Display/Driver Bif United States flag United States
58174 53331104300 Display/Driver Fun House United States flag United States
58135 53331104661 Display/Driver Fun House United States flag United States
56928 53331104892 Sound Board Fun House United States flag United States
78477 53331105038 Flipper Board Dennis Braun United States flag United States
27449 53331106120 Flipper Board Jess Askey United States flag United States
27425 53331106120 Flipper Board John Vorwerk United States flag United States
28120 53331106215 Display/Driver Pistol Pete United States flag United States
61668 53331106470 Flipper Board Dennis Braun United States flag United States
33042 53331106485 Display/Driver Rod McLarge United States flag United States
50811 53331106726 Display/Driver Fun House Australia flag Australia
33212 53331106959 Flipper Board Pistol Pete United States flag United States
60890 53331107273 Display/Driver Fun House United States flag United States
62491 53331107280 Solenoid Driver Dennis Braun United States flag United States
42697 53331107895 Display/Driver John Vorwerk United States flag United States
54710 53331108067 Display/Driver Dennis Braun United States flag United States
17985 53331108265 Solenoid Driver John Vorwerk United States flag United States
67294 53331108307 Display/Driver Dennis Braun United States flag United States
61514 53331108413 Sound Board Dennis Braun United States flag United States
67223 53331108602 Solenoid Driver Dennis Braun United States flag United States
49540 53331108897 Solenoid Driver Dennis Braun United States flag United States
31568 53331109053 Display/Driver Rod McLarge United States flag United States
49591 53331109058 Display/Driver Rod McLarge United States flag United States
59484 53331109292 Display/Driver Fun House United States flag United States
64788 53331109347 MPU/CPU Dennis Braun 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 6/29/2007 12:22:32 PM by Jess Askey
On Bally games from this era, there are serial number stickers everywhere. There should be one on the front of the cabinet under the coin door, one on the back of the cabinet on the model sticker and I believe there is one on the top of the backbox as well (this is a good one to look at if the others are damaged). Also, all the game printed circuit boards have the original serial number on them as well.
Posted 11/30/2008 10:30:39 AM by Steve fisher
also look on the power pack
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 51031102230, 51731105744, 51731107609 ^(5[0-9][0-9]31)(?<sortdata>[0-9][0-9][0-9][0-9][0-9][0-9])$ True
International Game 53331I109413, 53331I109237, 53331I109188 ^(5[0-9][0-9]31)(I)(?<sortdata>[0-9][0-9][0-9][0-9][0-9][0-9])$ True
Experimental Game 53331X109413, 53331X109237, 53331X109188 ^(5[0-9][0-9]31)(X)(?<sortdata>[0-9][0-9][0-9][0-9][0-9][0-9])$ True
Playfield serial number 516214 ^(?<sortdata>[0-9][0-9][0-9][0-9][0-9][0-9])$ False


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...