Just saw that two of my coins were purchased here a few days ago. Brass MS69 0.5BTC, and brass MS69 1BTC for 1BTC and 2BTC respectively (2x face value).

https://etherscan.io/nft/0xebf19415d94be89a1d692f82af391685dc1bff79/50
https://etherscan.io/nft/0xebf19415d94be89a1d692f82af391685dc1bff79/53