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: 6,714  Serials: 78,779  Visitors: 111,702,135  Members: 6,220  Photos: 53,935  Lat/Lng: 43,994  Masks: 78,779(1,173.35%)  Traits: 592  Nudges: 273,253  Backglasses: 1,865
  Most Serials: Twilight Zone(1,519)  Most Submissions: Dennis Braun(6,323)  Most Points: Dennis Braun(47,035)  Highest Quality: The Knight(17.00)  Most Nudges: pinballservice-nl(31,077)
SerialBot Score:
Assigned Game:  +1
Matches Mask:  0
Trait Data:  0
Verified:  +1
Has Photo:  +1
Physically Viewed:  +1
Nudge Total:  -3
Total Score:

Submission Certificate
Game: Harley-Davidson (2nd production run)
Serial Number: 20001650733
Submitted By: Brian Romancheck
Submit Date: 5/14/2026
Game Part: Complete Game
Country: United States
Comment: Date code of 31322, which is November 18, 1991. That date indicates its in the second run of games that was mentioned of the factory tour of Expo 1991. Game is also Diamondplate
SerialBot Says: The serial number format for this game is not yet known.
Members can nudge SerialBot scores!!
Submitted Photo:
(hover for zoom window)
This Submission:   Others:
Submitted Location:
Other Submissions for this Serial Number:
SerialBotSubmittedSubmitted ByCountryGame PartConditionDetails
There are no other submissions of this serial number for this game.

Nudge History:
help

Nudging allows IPSND members to adjust the SerialBot score for a submission with a photo attached by determining of the photo clearly shows the existence of the serial number submitted. However, nudging is only 'Open' until there is a clear determiniation of accuracy by members. If a serial number has more than 5 nudges and the total of those nudges is greater than 4 or less than -3, then the nudge will be closed automatically after the last nudge. If a submission is controversial and there are nudges in both the positive and negative direction, then the nudge will remain open until the balance of voting swings the point value beyond 3 (positive or negative).

Nudging Closed On: 5/14/2026 11:50:43 AM
DateNudged ByNudgeComment
5/14/2026Fun House-1The number is not a serial number but a date of manufacture (see the text below it). The machine was made on 03/22 1991.
5/14/2026Tom Bagaglia-1 
5/14/2026CasaSchiller-1 
5/14/2026GermanysNo1-1not a serial
5/14/2026Greg Lilly-1Submit the photo of the serial number. Not the date code.
©2006-2026 : The Internet Pinball Serial Number Database
All trademarks and copyrighted materials remain property of their respective owners.
All copyrighted and trademarked Gottlieb® material is pending license from Gottlieb Development LLC.
Questions? Comments? Ask the webmaster
IPSND Privacy Policy
Page rendered in 0.518 seconds.