What do you photo guys make of this?

[thecatspajamas]

Not commenting on the authenticity or lack thereof of the stamp in the OP, but below is another example of that stamp style in black, along with 1944 date stamp. This on an 8x10 photo from an archive intact since at least the 1950's.

Also worth noting, there appear to have been two William Kuenzels, father and son, who worked for the Detroit News. The father began there in the early 1900's. The son began in the 1940's and later worked for the Miami Herald. I don't know if their careers there overlapped, and it definitely bears further research, but with the two having the same first and last name, and working for the same paper, it seems it would be easy to confuse the two based on stamps alone. It also seems reasonable that Jr could have played around with some of Sr's old work, whether restrikes from the original negatives or by reshooting his father's photos. Not saying that's what is shown, but just throwing some additional info out there for consideration.