Fairly often I get a request from a person via my web site Big Daddy Enterprises (not a plug here, I swear) for rubber ring kits for early Williams games, and sometimes I have to just guess, work with the customer to create a SWAG list, or once in awhile I'm lucky and find a list out there. Sometimes I have to tell the customer sorry, I can't help.
I'm willing to put together a database of these rings, to help myself, my customers and others, but I could use your help. I'm talking Williams System 3-7, and if it works out I don't mind hosting for other games. If you can help, have a list from a rubber ring kit you got, please post it here or email. Thanks!!