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: 51,425  Visitors: 31,553,510  Members: 3,813  Photos: 28,262  Lat/Lng: 25,092  Masks: 51,425(827.17 %)  Traits: 505  Nudges: 143,747  Backglasses: 1,862
  Most Serials: Twilight Zone(1,071)  Most Submissions: Dennis Braun(3,728)  Most Points: Rod McLarge(27,987)  Highest Quality: Jim Butler(9.15)  Most Nudges: King of Pinball(19,317)
Popeye Saves the Earth - IPSND/IPDB No. 1851 - February 1994
Backglass Image
Manufacturer: Midway Mfg. Co., a subsidiary of WMS Industries, Inc.
Players: 4
MPU: Williams WPC (DCS)
Production Run: 4,217
Game Type: Solid State Electronic (SS)
Model: 50022
Submissions: 115 serials of 4,217 (2.73 %)
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.

515,518 (12,224.76 %) linear / 3,471(82.31 %) in 71 clusters 210 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
Bluto head Some games had a 3d Bluto head and some had a flat piece of plastic Bluto head.
Fun House5/27/20180

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
23934 50022030075 Sound Board John Vorwerk United States flag United States
57171 50222302712 Display/Driver Fun House Germany flag Germany
24313 50222313772 Display/Driver pinballservice-nl Netherlands flag Netherlands
51035 50222331202 Display/Driver Fun House Denmark flag Denmark
30838 50222334612 MPU/CPU Adam Pretorius South Africa flag South Africa
55942 50222338842 MPU/CPU Fun House Germany flag Germany
61596 50222362102 Display/Driver Fun House Italy flag Italy
50554 50222362892 Other/Unknown Dennis Braun United States flag United States
26828 51022543762 MPU/CPU Antti Peltonen Finland flag Finland
63061 51322360292 Solenoid Driver Dennis Braun United States flag United States
58593 51322360342 Display/Driver Fun House Netherlands flag Netherlands
61048 51422310592 Display/Driver Fun House France flag France
35045 51422310612 Power Supply Rod McLarge United States flag United States
48224 52022334222 Display/Driver Dennis Braun United States flag United States
62339 52022355632 Display/Driver Dennis Braun United States flag United States
59999 52022357162 Solenoid Driver Dennis Braun United States flag United States
51146 52122364452 Display/Driver Fun House United States flag United States
30949 52122365282 MPU/CPU Rod McLarge United States flag United States
32469 52122368652 Solenoid Driver Antti Peltonen Sweden flag Sweden
42422 52122373992 Display/Driver Antti Peltonen Finland flag Finland
34413 52322331412 MPU/CPU Rod McLarge United States flag United States
61312 52322440672 Solenoid Driver Dennis Braun United States flag United States
58742 52822542042 Display/Driver Fun House United States flag United States
60875 53322334652 Solenoid Driver Dennis Braun United States flag United States
61709 53322334942 Solenoid Driver Dennis Braun United States flag United States
8643 53322337692 Other/Unknown Bill Ung United States flag United States
48837 53322339792 Sound Board Rod McLarge United States flag United States
20687 53322350182 Other/Unknown John Vorwerk United States flag United States
10133 53322350182 Solenoid Driver John Duchi United States flag United States
61052 53322350512 Flipper Board Fun House United States flag United States
36232 53322351022 Sound Board Felix United States flag United States
61513 53322353182 Sound Board Dennis Braun United States flag United States
37861 53322354382 Display/Driver Rod McLarge United States flag United States
17421 53322354572 Display/Driver John Vorwerk United States flag United States
17382 53322354572 Display/Driver John Vorwerk United States flag United States
25041 53322356782 Sound Board John Vorwerk 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.

Production Game 50222361792, 53322325882, 53322327082 ^(5[0-9][0-9]22)(?<sortdata>[0-9][0-9][0-9][0-9][0-9][0-9])$ True
International Game 53322I364482, 53322I357252, 53322I355792 ^(5[0-9][0-9]22)(I)(?<sortdata>[0-9][0-9][0-9][0-9][0-9][0-9])$ True
Experimental Game 53322X364482, 53322X357252, 53322X355792 ^(5[0-9][0-9]22)(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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