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Is this a error? 1920 Merc Dime

Got this in my lot of 1000+ silver dimes. Looks like a clipped planchet but it’s straight. It weighs 2.37g. No filing/grinding marks are visible
Collector
91 Positive BST transactions buying and selling with 56 members and counting!
instagram.com/klnumismatics
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Post mint damage as the edge was shaved off and there's no blakesley effect.
You can see other PMD on the other side of the rim also.
At first it looked like PMD, but maybe not. Is the rim thicker there?
I measured it with my caliber, the straight side is not thicker, same thickness to the .01 mm
Collector
91 Positive BST transactions buying and selling with 56 members and counting!
instagram.com/klnumismatics
I'm in the PMD camp.
Could be a straight clip then. I'm not an expert on errors. Maybe someone will chime in.
PMD chip marks on the rim suggest got stuck in something and ground the side down
https://www.pcgs.com/setregistry/quarters/washington-quarters-major-sets/washington-quarters-date-set-circulation-strikes-1932-present/publishedset/209923
https://www.pcgs.com/setregistry/quarters/washington-quarters-major-sets/washington-quarters-date-set-circulation-strikes-1932-present/album/209923
Post mint damage.
Ok thanks for all your input! Sadly it wasn’t a error
Collector
91 Positive BST transactions buying and selling with 56 members and counting!
instagram.com/klnumismatics
Someone rubbed the merc on sandpaper or something similar.
It may have been part mosaic/tile thing and that one popped out.
It could be the edge of the metal strip the planchet was punched from, it is also possible that it is post mint damage.
I would have to see this in hand before I could say which it was. I would think that Fred would be the expert on this matter.
Fighting the Fight for 11 Years with the big "C" - Never Ever Give Up!
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So might be one. I’ll keep my hopes up
Collector
91 Positive BST transactions buying and selling with 56 members and counting!
instagram.com/klnumismatics
Your first & second photo show 3 very slight depressions on the straight edge. (Man made=PMD)
Best chance for PMD but could be a slightly ragged straight clip.
The edge looks too smooth to be a straight clip. Also, there is a partial rim on the obv (would expect it to be weak) and no evidence of a Blakesley effect. Looks like PMD
It appears - to me - to be PMD....the reeding seems to 'fade' into the missing portion, which indicates a grinding operation of some type...Cheers, RickO
It's not a clip, end of strip planchet, etc.
PMD without a doubt.
Ok thanks!
Collector
91 Positive BST transactions buying and selling with 56 members and counting!
instagram.com/klnumismatics
looks like pmd to me as well, jmo
OR, it may have been used to escape from Alcatraz which would suggest they did survive.
Used up their quarters, nickel, and cents, and all that was left was the dime.