Not sure about the circles on the obverse, probably just damage. "Cuds on coins" has it listed as "RIDB-1c-1982-01R(LD)(CU)" and the obverse doesn't show the circles as seen in the last image.
Actually, I think that the "bubble" on the front might be an occluded gas bubble that popped. Its an error, but not worth much, if anything. But nice find on the reverse! That's worth something.