Impossible 1984-S Proof Penny Repunched Mint Mark / RPM , S/S?

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Author	Replies: 7 / Views: 848
jackson12345 Valued Member Canada 71 Posts	Posted 08/23/2025 01:31 am I've read that it's impossible to have a proof (S) repunched mint mark or S/S because they are not hand punched. So I present to you photos of odd looking mint marks on a couple of 1984-S pennies. Please explain what this could be. My thought- with the amount of depression inward surrounding the mint mark, it would lead me to believe that it was hammered in afterwards, unlike the level surrounding metal of the date. Therefore indicating it may have been hammered on afterwards? Thanks in advance. \ Edited by jackson12345 08/23/2025 01:46 am Report this Post to the Staff

nickelsearcher Moderator United States 15395 Posts	Posted 08/23/2025 05:34 am I suggest the answer lies somewhere in the field of copper plating issues. The next to last image shows similar plating issues associated with the digits in the date. Take a look at my other hobby ... http://www.jk-dk.art Report this Post to the Staff
JimmyD Bedrock of the Community Canada 21589 Posts	Posted 08/23/2025 07:12 am Look like small plating blisters. Seem to be common around mint marks. Report this Post to the Staff
uruman Pillar of the Community United States 5193 Posts	Posted 08/23/2025 08:39 am I believe also to be a platting issue , help me on something , when you say "hammered in afterwards , you mean on the die itself before striking the planchett or after the strike ? Report this Post to the Staff
jackson12345 Valued Member Canada 71 Posts	Posted 08/23/2025 09:53 am Replying to "urumun" I meant after strike, being hammered on as the D and P mints would have. That would create the dent impression that is visible. Report this Post to the Staff
halfamind Pillar of the Community United States 1484 Posts	Posted 08/23/2025 11:16 am Sadly, it's a plating issue — common on early Zincolns, and proof strikes are not immune. Report this Post to the Staff
Errers and Varietys Bedrock of the Community United States 73798 Posts	Posted 08/23/2025 11:46 am What you're seeing is plating issues. Errers and Varietys. Report this Post to the Staff
Dearborn Moderator United States 95018 Posts	Posted 08/23/2025 10:18 pm with above, but next time, please, only one coin per topic. Collecting since 1972. Learning from then on "Tell me and I forget. Teach me and I remember. Involve me and I learn." - Benjamin Franklin 7070 type set coin count: 51/76 Uncirculated American Silver Eagles My American Silver Eagle Proof Collection Sacagawea Dollars Innovation Dollars Eisenhower-Dollars Kennedy-Half Dollars Washington-Quarters Roosevelt-Dimes Buffalo-Nickels 1938-2005 Jefferson-Nickels Lincoln-Cents Report this Post to the Staff
	Replies: 7 / Views: 848

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Impossible 1984-S Proof Penny RPM, S/S?