I'm curious where IPDB gets the production numbers for each title ? Is there a source bibliography of where each pin's numbers came from ? Jive Time, for instance, shows 465+. Was the number estimated using the available submitted serial number range ?

Thanks for the insight ! Jive Time has me scratching my head, though. The 15 serial numbers submitted to IPSND range from 60652 to 68658. That leaves 8006 machines - which obviously isn't correct. So, why did Williams skip sets of numbers in the production sequence ? If you were to throw out the top two and bottom two numbers of the 15 shown, that still leaves a range of 1,850 potential serial numbers. Any thoughts on their numbering logic ?

Lastly, what was the purpose of even having a serial number on a game, especially if they weren't going to be used for production number keeping ?

Thanks - Mark

http://www.ipsnd.net/View.aspx?id=1298