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: 6,661  Serials: 64,674  Visitors: 65,084,652  Members: 5,293  Photos: 40,329  Lat/Lng: 34,338  Masks: 64,674(970.94%)  Traits: 566  Nudges: 204,765  Backglasses: 1,865
  Most Serials: Twilight Zone(1,234)  Most Submissions: Dennis Braun(5,971)  Most Points: Dennis Braun(44,356)  Highest Quality: EM-fan(9.51)  Most Nudges: King of Pinball(25,973)
Williams System 6A
IPDB:  View at IPDB (External site)
Stats:  MPU used in 2 games.
Backglass Image Algar1980Williams Electronics, Inc. (1967-1985) 16
Backglass Image Alien Poker1980Williams Electronics, Inc. (1967-1985) 80