Quote: What if the the plating blisters don't depress? Or do only some depress?
Well if it does depress then for sure it was a plating blister. If it doesn't depress, then it might instead be a little bit of dust or whatever trapped between the copper plating and the zinc core. Neither one affects numismatic value so typically there is no reason to investigate further.
"If you climb a good tree, you get a push." -----Ghanaian proverb
"The danger we all now face is distinguishing between what is authentic and what is performed." -----King Adz
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