First Page
Posted 11/17/2021 11:13 am
Quote:
Looks like it might be, could be from some kind of corrosion, acid, or chemical reaction.
Looks like it might be, could be from some kind of corrosion, acid, or chemical reaction.
I agree 100%.
A caustic substance (Acid, for example) that got on the reverse in a random pattern would eat away the surface of the copper to expose the "world" below the surface.
The short lines in the recessed areas are part of the metallic composition and are left behind as the different metals dissolve at different rates, not part of a design from a die or striking error.
PMD can cause some interesting damage and you found one of them.
Words of encouragement are one of the major food groups.
We need to consume them regularly to thrive and grow.
We need to consume them regularly to thrive and grow.
