Odd “S” stamped into a Kennedy Half dollar...
Has anyone seen this before? Doesn’t seem like the easiest thing to accomplish and there is a faint 2nd “S” like it was done twice

Comments
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And although the pictures look like it is raised, it is stamped into it.
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looks like a letter punch and a hammer were involved.
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damaged by someone with a letter punch
Current maintainer of Stone's Master List of Favorite Websites // My BST transactions6 -
Yep, letter punch. Maybe they wanted to make another super bird?
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@Eddiecapo said:
Has anyone seen this before? Doesn’t seem like the easiest thing to accomplish.If you have a hammer and a letter punch it is very easy to do.
I have a set of punches. Send me some half dollars and tell me what letter you want and I'll strike them for you.
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Just someone fooling around with a letter punch as others have said. No numismatic value or interest.
All glory is fleeting.1 -
@Eddiecapo.... Welcome aboard.... Post mint damage (PMD).... No numismatic premium. Cheers, RickO
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Probably flattened the obverse portrait a little too I'm guessing.
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I have seen letters and numbers that were hand stamped on coins. But never on a Kennedy half dollar. I don't know what to make of it. Quite odd.
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San Francisco is really getting sloppy with their mintmark.
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Counterstamped coins are fairly common. The obverse (heads) side of the coin will likely have a "bulge" from the moved metal.
For the seasoned collectors ... it's the latest variety discovered and in the Cherrypicker's Guide. It's a "superbird" Kennedy half!

Oh ... welcome to the Board!
Numismatist Ordinaire
See http://www.doubledimes.com for a free online reference for US twenty-cent pieces0 -
As mentioned, your coin has

(Post Mint Damage)The other side should show some signs of the counterstamping.
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Check mine out.
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Wow this is very interesting how you watch.
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Maybe some collectors Initial
Steve................Oops.......hey don't look at me
Promote the Hobby2 -
@davewesen said:
@Jimnight said:
Check mine out.
that looks like the S is inverted, what kind of error is that?
I think it's the Type 1 error ... Very rare!
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@Mdcoincollector2003 said:
San Francisco is really getting sloppy with their mintmark.I wish I had thought of that. Very good.
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@OldEastside said:
Maybe some collectors InitialSteve................Oops.......hey don't look at me

We got the culprit
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Someone just wanted a "Superbird" Kennedy to fill an empty hole in their album? beside their Quarter, going for the whole set... LOL
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In the old days coin graders put their initials on coins:

https://www.brianrxm.com
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