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: 6,696  Serials: 68,496  Visitors: 74,352,405  Members: 5,632  Photos: 44,011  Lat/Lng: 37,563  Masks: 68,496(1,022.94%)  Traits: 572  Nudges: 223,264  Backglasses: 1,865
  Most Serials: Twilight Zone(1,307)  Most Submissions: Dennis Braun(6,104)  Most Points: Dennis Braun(45,438)  Highest Quality: The Knight(17.00)  Most Nudges: pinballservice-nl(28,311)
Williams System 4
IPDB:  View at IPDB (External site)
Stats:  MPU used in 4 games.
   
BackglassGameYearManufacturerSerials
Backglass Image Phoenix1978Williams Electronics, Inc. (1967-1985) 54
Backglass Image Flash1978Williams Electronics, Inc. (1967-1985) 202
Backglass Image Pokerino1978Williams Electronics, Inc. (1967-1985) 18
Backglass Image Stellar Wars1979Williams Electronics, Inc. (1967-1985) 45