Since this is not from the 1978-1982 time period when Woodys are thought to have their grain effect from roller dirt or something like that, I am thinking this may be improper alloy mix. Tin was still a very minor part of the mix in 1961. But it seems like the lines are more "dotted". Any opinions?
When the acid is stronger it eats away the coin coin evenly. reducing the overall size and thickness of the coin. They used to turn cents into dime size doing this. Back in the 60's you could get a soda for 7-1- cents. So if you got a 7 ounce both of soda, then it cost you 7 cents, giving you back Three Cents in change. (I never did this, just heard about it) They would do this in chemistry class. Even removing the silver on clad coins. This can be done with things like ketchup, taco sauce of anything with vinegar base to it. (turning a circulated cent pink in color)Or stronger acids.
Those are really interesting acid images! Most of them seem to be pitted, so I thought I would try a closer photo. I am not at all sure what it is telling me!
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