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: 6,708  Serials: 72,857  Visitors: 88,155,964  Members: 5,940  Photos: 48,178  Lat/Lng: 41,232  Masks: 72,857(1,086.12%)  Traits: 578  Nudges: 244,252  Backglasses: 1,865
  Most Serials: Twilight Zone(1,391)  Most Submissions: Dennis Braun(6,218)  Most Points: Dennis Braun(46,303)  Highest Quality: The Knight(17.00)  Most Nudges: pinballservice-nl(31,695)
Williams System 4
IPDB:  View at IPDB (External site)
Stats:  MPU used in 4 games.
   
BackglassGameYearManufacturerSerials
Backglass Image Phoenix1978Williams Electronics, Inc. (1967-1985) 58
Backglass Image Flash1978Williams Electronics, Inc. (1967-1985) 215
Backglass Image Pokerino1978Williams Electronics, Inc. (1967-1985) 21
Backglass Image Stellar Wars1979Williams Electronics, Inc. (1967-1985) 51