Roberto Clemente (?) Signed cut.

2.5"X1" cut of a material no one can indentify. Maybe dried out cork? There is a seam/crack on the back that's barely visible.

I don't know if this is authentic. I've shown it to several people and they say inconclusive. So, I'm selling it to recoup the money I have into it.

Bid at your own risk and pay for authentication knowing it may come back inconclusive. No refunds.