No mint mark just means Philadelphia. This is not a proof coin. Proofs are made from specially polished dies.
📋 Item Submitted
1975 no mint mark dime.. proof????
M
Marc's Expert Appraisal
ANA-Certified Numismatist · Hudson Valley Numismatics
Similar Appraisals
It's a dime I found in a roll from the bank
Bring it back and ask for a better one.
Dime
Looks like a mangled ten cents. If 1964 or earlier it has five bucks of silver. If you can't tell, look at…
Coin feels heavier than other dimes Has dip in head as well
Whatever alteration and damage this has suffered has not added to its value.