I don't know the name of the organization this chip was made for, but I'm guessing it is something like the "One O'Clock Club". You could try calling the 800 number and see who answers.

Oversize PMSC chip from Reliable Engraving, 1 5/8" diameter, blue plastic over brass core. I have only one chip.

If you'd like to add this to your chip collection, it can be yours for $25 delivered in USA.