Looks like the mark of the beast. I would burn it.
Need Advice on traces on new RF chessboard

There should be no scratches on a new chess board. However, the damage is on the bottom. No one will notice. You could just keep it as-is. It would definitely bug me if I received that. However, I am not sure it would bug me enough to return it.
Hello,
I just got my first RF chessboard. On the rear side one can see some traces. Having no experience with wooden chessboard i was wondering if its common for wooden boards, or not. Thank you for your help.