Keep in mind that the coins pictured in the Collectors weekly and Treasurenet links are not confirmed re-punched mint marks. They are coins that have been posted by the people who found them, and they are hoping to get information, just like you did with your coin. Also, the video that both mentioned, about a supposed one-of-a-kind unknown RPM, is on CoinOPP, which is a sensationalist video site that is designed to get lots of views, not provide accurate information. (My opinion.)
Your coin does not appear to be a re-punched mint mark to me. It looks like strike doubling.