I did zoom in on the 2nd picture and see what appears to be a wheel "makers mark" near the rivets joining the rim to the center section. Also what looks like some stamped numbers/characters on one rim back edge surface inside the bead area.
Maybe someone recognizes these???
~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)