I think

it may be roller lines. It's difficult to say with a clad coin.
Quote:
A "woodie" is from improper alloy mix in copper cents.
However, I've seen nickels that appear to be "woodies" and that's an alloy. The cladding on this dime is the same CuNi alloy used to make nickels so, it could be a woodie but, on only side because it's clad.
The very linear look of it, though, makes me think roller lines.
