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How To Analyze Mercury Dimes For RPM?

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Brandmeister's Avatar
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 Posted 07/09/2023  8:35 pm Show Profile   Check Brandmeister's eBay Listings Bookmark this topic Add Brandmeister to your friends list Get a Link to this Message Number of Subscribers
As I go through my grandfather's stash of culled silver, one of my remaining questions is repunched mint marks. The clearest reference examples are from pristine coins with (mostly) obvious bits sticking out. But how do you analyze circulated coins for repunched mint marks?

This is a batch of Mercury dimes from 1937-1945. I captured all the Denver and San Francisco mint marks as an organized album. Can someone walk me through which dimes might be interesting to analyze further, and what clues specifically you are looking for?

How-To-Analyze-Mercury-Dimes-For-RPM?
How-To-Analyze-Mercury-Dimes-For-RPM?
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Spence's Avatar
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 Posted 07/09/2023  8:56 pm  Show Profile   Bookmark this reply Add Spence to your friends list Get a Link to this Reply
Yikes that is a lot of mercs you have there!

I'm interested to see what others think, but my Two Cents is that once most RPMs have some circulation wear, all evidence of the RPM will be gone. Even if you could match up mintmarks by location on the coins, it seems to me that most folks wouldn't pay extra for a RPM with no visual evidence remaining of that secondary punch.
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Brandmeister's Avatar
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 Posted 07/09/2023  9:37 pm  Show Profile   Check Brandmeister's eBay Listings Bookmark this reply Add Brandmeister to your friends list Get a Link to this Reply
Thanks, Spence, that's one of the things I've been wondering. If the value of the coin is the subtle differences of the mint mark, is it worth doing forensic gymnastics when the key details are lost to wear. If it were me, I would never pay for a RPM example that had to be identified by position and outline rather than well-defined features.

I've wondered the same thing about DDO / DDR. The other day I found a 1941 nickel that I'm pretty sure is a well-known DDR, but the details are so lost to wear that only the shapes remain recognizable. The PCGS price estimates will go all the way down to a 1+ grade, but at some point it seems like nobody would be interested.

I don't know that for a fact, though. For all I know, there might be a subculture that trades and collects inexpensive examples of Fivaz-Stanton cherries in sub-XF condition. There are a number of sold listings on Brian's coins for very subtle errors in the $5-10 range, although those coins are probably in decent condition if he published reference images in the catalog.
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Errers and Varietys's Avatar
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 Posted 07/09/2023  10:28 pm  Show Profile   Bookmark this reply Add Errers and Varietys to your friends list Get a Link to this Reply
That's a tough one. Only the major RPM's would be visible with circulation wear.
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Dearborn's Avatar
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 Posted 07/09/2023  10:50 pm  Show Profile   Bookmark this reply Add Dearborn to your friends list Get a Link to this Reply
with E&V here, unless there is large separation , it would difficult to see them.
(also this topic would better be served in the 'Classic varieties and errors' sub forum.)
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Brandmeister's Avatar
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 Posted 07/09/2023  11:12 pm  Show Profile   Check Brandmeister's eBay Listings Bookmark this reply Add Brandmeister to your friends list Get a Link to this Reply
Heh, I am so accustomed to posting on this particular forum, I overlooked that these are considered American classic coins.

So is the general sense that we cannot find any mint marks in this list that are worth evaluating further?
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