This dime appears to have been struck with a lot of grease on both obverse and reverse. Or, is there another explanation for the condition?
I ask because your coin looks very reflective. A piece of white paper between the coin and light source may help with that. I cannot see any wear on the Ear. So the edge does not match wear in center of coin. Rim damage is opposite of other side. The letters US UNUM look fat which make me think it may be PMD. As I am not sure that Struck through debris would cause that effect. Your coin may have been smooshed /squeezed somehow. I may have been a bit hasty with my first reply. I hope someone else will reply with their opinion.
Thanks @alurid I looked very close and now believe that it is circulation wear and tear. Thanks again for the feedback.
I don't know for sure. I picked them up individually, back in probably 1985. I kept them because of how they looked.
Looks like the Die was filled with grease and debris. As coins were minted the debris shifted. I'm not seeing a lot of wear for the age. Look very closely at the high points on both sides of the coin to determine the extent of the wear. Also it appears to be a MAD big tne rims. I find it odd that one side of the coin in one area looks worn but the opposing area on the same side shows little to no wear. This could indicate a filled Die but it can also mean PMD. Someone could have filed or sanded the coin. Again, check carefully for damage signs.