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Message From Mike Diamond

 
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Bedrock of the Community
United States
34093 Posts
 Posted 03/23/2020  12:31 pm Show Profile   Bookmark this topic Add John1 to your friends list Get a Link to this Message
I emailed Mike this morning with a few question I had. He said I could post his answers. Here is what I asked Morning Mike,
Hope all is going well with you and yours.
I have a few questions I would appreciate an answer to that has been on my mind for awhile now. In what year did over mint marks stop? In what year did over dates stop? In what year did RPMs stop? Can a copper plated cent be a lamination error? Do I,we need to be worried about catching a virus from searching coin rolls? Is it ok if I post your answers on coin Community? Thank you very much for taking the time to help us collectors.
John
Here is his answers Hi John.

There are two purported overmintmarks among 1956 cents (one is actually a misplaced S-mintmark on a 1956-D cent). However, these have been questioned. Right now the year 1955 seems to be the last definite year for OMMs. As far as I'm aware, the last year for true overdates (not Class III doubled dies) is 1909, although I vaguely recall someone telling me that they continued for a little while longer among gold coins. RPMs stopped in 1990, when the mintmark was incorporated into the master die. I've never seen a zinc cent with a lamination error, only peeling plating. While paper currency carries a large microbial load, I'm not sure about coins. Certainly any coin that has been sitting in a roll for more than a few weeks is safe. You can post on Coin Community.

Cheers,

Mike
John1
( I'm no pro, it's just my humble opinion )
Searched 5+ Million Cents Since 1971
Edited by John1
03/24/2020 04:34 am
Valued Member
United States
416 Posts
 Posted 03/23/2020  1:40 pm  Show Profile   Bookmark this reply Add RobO411 to your friends list Get a Link to this Reply
Thanks John1 for passing on information. Take care. Everyone take care!!
Bedrock of the Community
United States
34093 Posts
 Posted 03/23/2020  3:11 pm  Show Profile   Bookmark this reply Add John1 to your friends list Get a Link to this Reply
Yes,everyone be EXTRA careful. Michigan just got the stay shut in orders starting tonight at midnight.
John1
( I'm no pro, it's just my humble opinion )
Searched 5+ Million Cents Since 1971
Pillar of the Community
United States
2580 Posts
 Posted 03/24/2020  4:43 pm  Show Profile   Check XavierOfGreen's eBay Listings Bookmark this reply Add XavierOfGreen to your friends list Get a Link to this Reply
Copper is a mass slaughterer of practically all disease carrying microbes, from bacteria to viruses.

https://www.ncbi.nlm.nih.gov/pmc/ar.../PMC3067274/
Oldest Found-------
Cent: 1842 (from machine) ---- Three Cent: 1866 [Nickel] (from machine)
Nickel: 1883 (from roll) ---- Dime: 1911 (from roll)
Quarter: 1932 (from machine) ---- Half: 1917 (from roll)
Dollar: 1880 (from machine) ---- Foreign: 1863 (from machine)
Valued Member
United States
117 Posts
 Posted 03/25/2020  10:18 am  Show Profile   Bookmark this reply Add Vindex to your friends list Get a Link to this Reply
The chemical property of copper, zinc, nickel, and tin also keep a microbe from mutating. Stainless steel does not. You are relatively safe with coins but paper currency could harbor a virus for days. Use a debit card. If you use cash and receive cash as change, it is easy to spray it with an antimicrobial spray, allowing it to dry and use it again. I have an infectious disease doc as a client who would bend over to pick up a penny but has not used cash since medical school.
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