Found this from local store thought it was interesting haven't seen this before what's y'all thoughts
That's crazy ty wonder what could just take the rim off like that and not damage the rest of coin still learning a lot love this forum everyone has been very helpful makes it easier what to actually look for
The core of the planchet, thus the coin, is softer than the surface, and when exposed to any type of acid, like vinegar, orange juice, etc. it will attack and eat the core more than the surface material, thus what you have.
Nitric acid if you are in a hurry. Ferric chloride takes a little longer ( you can use it to make printed circuit boards). Jim
