Hi Nick, Somebody else found a similar one of those recently. Yours is a hex, the other one was slotted. Maybe a variation?

Here's the link.

https://www.stovebolt.com/ubbthread...87131/anyone-recognize-these#Post1587131


1950 Chevrolet 3100 (Ol' Roy)

1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)