93 dime what is this?

Is it pmd? I see lines looks like they are raised on both sides and reverse has some clad missing.

 

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might help if there were pics

 

I'm guessing it's a dime based on the pictures.

 

That is not missing clad as in a Mint Error missing clad layer. It would show up as copper. Could be Environmental Damage.

 

agreed but what is up with the vertical lines.

 

They look like roller marks from when the strip was made.

 

Just another dirty dime worth $.10. Spend it.

 

The lines and gray color might represent a legitimate mint error. The lines are likely roller lines, and their presence might have been enhanced by improper annealing. The loss of mint luster presumably happened outside the Mint. See this article for more information:

http://www.coinworld.com/news/us-co...ripes-on-coins-are-not-fully-understood.html#

 

Yeah I saw that too as well as the horizontals on some of the letters The lines sometimes come from digital issues with a scanner I know but the ones on the letters not sure but the stain color looks like oil or tape or maybe it sat in a change holder and got some coke on it and the sugar???