Hi Robert; Sorry to burst your bubble, but the $5 Boardwalk Regency chip is no longer "UNIQUE", and I would have to assume that the $20 may not be either..... for the same reason that a $5 chip turned up. Having said that, there is no question that there are many, many, more $5 BOA chips to examine than there are $20's. While the image below is of an uncleaned specimen, we now know there are at least two of them out there ... maybe more.... taking it out of the "unique" category. Anyone else have one (or more)of this inverted edge insert chip? Would be interesting to find out.