To the OP:
Your theory sounds, sound, something to look into.
However all through the
US coinage production all the devices are tapered. Thicker near the field and thinner at the top. This allows for easier release from a die.
From what I have observed it that on the older (Pre 1983 _ half of 1982) were coins consisting of Copper (95% copper, 5% Tin/Zinc) alloy, these coin allowed for sharper devices especially on the lettering because they took the shape well without much issue.
However on 1983 onward (part of 1982) started with the sharp issues, but slowly changed the design to bore rounded devices because the Mint learned that the Zinc plating was splitting on the sharper devices as compared to the more modern ones of recent years. I think if you were to look , you will notice that the more modern pennies don't have split plating as much as the older ones.
So, in my opinion, the rounded devices are looking to be doubled because we do not see a distinct change from the top of a device to the side or at the bottom on the field.
Posted 03/21/2025 05:57 am
