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: 80,508  Visitors: 117,174,469  Members: 6,316  Photos: 55,584  Lat/Lng: 45,508  Masks: 80,508(1,199.11%)  Traits: 591  Nudges: 281,565  Backglasses: 1,865
  Most Serials: Twilight Zone(1,541)  Most Submissions: Dennis Braun(6,336)  Most Points: CasaSchiller(48,449)  Highest Quality: The Knight(17.00)  Most Nudges: pinballservice-nl(30,746)
Williams System 3
IPDB:  View at IPDB (External site)
Stats:  MPU used in 5 games.
   
BackglassGameYearManufacturerSerials
Backglass Image Hot Tip1977Williams Electronics, Inc. (1967-1985) 28
Backglass Image Lucky Seven1978Williams Electronics, Inc. (1967-1985) 27
Backglass Image World Cup1978Williams Electronics, Inc. (1967-1985) 55
Backglass Image Contact1978Williams Electronics, Inc. (1967-1985) 30
Backglass Image Disco Fever1978Williams Electronics, Inc. (1967-1985) 59