Ruling out animals and aliens, I believe it's man-made. Women probably were involved in the process too. The mangling took place after the coin left the mint.
📋 Item Submitted
1958 dime curious if this is man made or possible error. Looks odd to me.
M
Marc's Expert Appraisal
ANA-Certified Numismatist · Hudson Valley Numismatics
Similar Appraisals
1996 D Roosevelt dime
There was a time when that dime would buy you a call at a payphone. But they just don't have many of…
2006 dime
10 cents?
1985 p dime it weighs 2.3 grams it's extremely dark compared to a dime.…
Just environmental damage.