I tripped on this macabre but amusing 1870 news item while doing a general search on the term "die sinker" in the New York Times archive. I thought your readers might enjoy it. Does anyone know of works by this George O. Colt?

Amusing! George O. Colt is not in my databank of coin, medal and token engravers.

Reminds me when I was going through Philadelphia Mint correspondence with Walter Breen in January 1954 and we found a letter where they ran out of toilet paper at the Mint in Philadelphia. The Superintendent made a frantic appeal by letter to the Treasury Department in Washington, DC.