1838 USA One Cent, Wondering About Value

Hello all,

I picked this up a while ago for 15 Euros and wondered if its worth anything.

I was in 2 minds whether to get it or not as there is damage, but its strange damage.
To me it doesn't look like direct damage, it looks like it was under a carpet and being walked on, slowly over time it has done a bit of wear, plus 1/3 of the damaged side (head side) is actually unaffected which leads me to think it was say under a skirting board, 1/3 unexposed and 2/3 exposed, that would explain why the bottom 2/3 seems worn/damaged and the other 1/3 doesn't.
Though its not weather damage as it's not rusty or going green.
What do you think?

The writing side seems mainly unaffected, virtually mint apart from a slight wearing of the flowery thing going around.

The coin is better than what it looks in these pictures but the damaged looks ephasised by the crap camera unable to define it more clearly.

It's around 28mm wide, around 1.5 mm thick, its actually quite heavy for a copper coin.

I've included some pictures, again if you look at the head side, about a 3rd of the way down you can see where the damage starts as the stars at the top even still have the lines going through them but below it looks like it has been walked over repeatedly but not directly.

Just wondered if I was ripped off or if 15 Euros was a bargain (around £12). Is it worth anything decent?