I'm revising my answer due to the new information in the opening thread.

Nobody bought whitewall tires for pickup trucks in 1972.

So, even though it's a bias ply tire, it's most likely a repop bias ply Coker and therefore a newer tire.

March 1992 is my new answer.

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)