Looks like it was in a fire at one time. These bubbles are caused by the metals in the clads not responding to heat the same:

A spendable coin that will probably not work in a vending machine. Some will flatten the bubble to make them fit again into a machine.

A spendable coin that will probably not work in a vending machine. Some will flatten the bubble to make them fit again into a machine.
Edited by coop
02/02/2021 09:22 am
02/02/2021 09:22 am





















