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: 51,918  Visitors: 32,712,994  Members: 3,855  Photos: 28,657  Lat/Lng: 25,233  Masks: 51,918(835.10 %)  Traits: 508  Nudges: 145,732  Backglasses: 1,862
  Most Serials: Twilight Zone(1,076)  Most Submissions: Dennis Braun(3,843)  Most Points: Dennis Braun(28,615)  Highest Quality: Jim Butler(9.15)  Most Nudges: King of Pinball(19,565)
Theatre of Magic - IPSND/IPDB No. 2845 - March 1995
Backglass Image
Manufacturer: Midway Mfg. Co., a subsidiary of WMS Industries, Inc.
Players: 4
MPU: Williams WPC Security (WPC-S)
Production Run: 6,600
Game Type: Solid State Electronic (SS)
Model: 50039
Submissions: 356 serials of 6,600 (5.39 %)
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.

294,861 (4,467.59 %) linear / 6,898(104.52 %) in 3 clusters 330 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
Flipper Gap Prototype games have an Up-post in the gap between the flippers, later replaced by a Shoot Again insert. Indicate what your playfield has between its flippers. Jay St@fford12/14/201637

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
50526 50239100970 Other/Unknown Dennis Braun United States flag United States
49773 50239101238 Display/Driver Fun House Korea, Democratic People's Republic of flag Korea, Democratic People's Republic of
42423 50239102650 Sound Board Antti Peltonen Finland flag Finland
31499 50239102650 Display/Driver Antti Peltonen Finland flag Finland
50228 50339104975 Display/Driver Fun House Germany flag Germany
27810 50739103344 Solenoid Driver Pistol Pete United States flag United States
11591 51039101572 Display/Driver John Duchi United States flag United States
48011 51139101649 MPU/CPU Rod McLarge United States flag United States
62840 51439100754 Flipper Board Fun House Italy flag Italy
52977 51439100886 Other/Unknown Fun House Netherlands flag Netherlands
61147 52039101144 MPU/CPU Dennis Braun United States flag United States
51948 52039104985 Display/Driver Fun House Spain flag Spain
48936 52139103967 Sound Board Fun House Korea, Democratic People's Republic of flag Korea, Democratic People's Republic of
59630 52239102163 Display/Driver Fun House Italy flag Italy
62240 52239102348 Display/Driver Fun House Italy flag Italy
11345 52339102930 MPU/CPU John Duchi United States flag United States
60338 52539105691 Solenoid Driver Dennis Braun United States flag United States
62261 53339100061 Coin Door Fun House United States flag United States
36230 53339103432 MPU/CPU Felix United States flag United States
18149 53339103725 MPU/CPU John Vorwerk United States flag United States
60018 53339103730 MPU/CPU Dennis Braun United States flag United States
59377 53339103754 Display/Driver Fun House United States flag United States
21708 53339103856 Display/Driver John Vorwerk United States flag United States
51114 53339104008 Display/Driver Fun House United States flag United States
8605 53339104038 Other/Unknown Bill Ung United States flag United States
62220 53339104106 Flipper Board Ric Turner United States flag United States
35329 53339104208 Solenoid Driver Ric Turner United States flag United States
61310 53339104720 Solenoid Driver Dennis Braun United States flag United States
35976 53339104723 Coin Door John Vorwerk United States flag United States
60017 53339104738 Sound Board Dennis Braun United States flag United States
31419 53339105066 Solenoid Driver John Vorwerk United States flag United States
62054 53339105150 Coin Door Fun House United States flag United States
43461 53339105264 Display/Driver Rod McLarge United States flag United States
50133 53339105621 Display/Driver Fun House United States flag United States
60811 53339106352 Solenoid Driver Larry Le Feuvre United States flag United States
56670 53339106356 Display/Driver Fun House United States flag United States
50613 53339106356 Display/Driver Dennis Braun United States flag United States
63279 53339106431 Solenoid Driver Dennis Braun United States flag United States
27305 53339106470 Display/Driver John Vorwerk United States flag United States
38026 53339106474 MPU/CPU Rod McLarge Puerto Rico flag Puerto Rico
48746 53339106516 Solenoid Driver Rod McLarge United States flag United States
47011 53339106657 Display/Driver Rod McLarge United States flag United States
57042 53339106669 Display/Driver Fun House 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 50939101849, 51739100188, 53339100018 ^(5[0-9][0-9]39)(?<sortdata>[0-9][0-9][0-9][0-9][0-9][0-9])$ True
International Game 53339I300012, 53339I106694, 53339I106684 ^(5[0-9][0-9]39)(I)(?<sortdata>[0-9][0-9][0-9][0-9][0-9][0-9])$ True
Experimental Game 53339X300012, 53339X106694, 53339X106676 ^(5[0-9][0-9]39)(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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