Key tag attached to key ring. If someone lost their keys, they could be dropped in a post box and they would be sent to the address on the tag. The stamped number would tell Amoco who the tag was registered to and then return their keys.
;Key ring given as a customer service. When registered by Amoco using that serial number, the customer can be contacted in the event of loss. There WAS a time when folks were THAT honest. Jim. Double post....good job Turnipseed
I believe back in the 60's a lot of gas stations used these as a perk,,I have one from Esso (they are Exxon now) HRP