The 1948 exterior sun visor should be for 1942 to 1948 and the 1952 sun visor should be for 1949 to 1954 that i know of. The 48 and 52 had two very different roof contours. Cheers.
__________________
1957 Pontiac Pathfinder Deluxe sedan restored 261 six
1974 Chevrolet Caprice Estate wagon low mileage original 400 V-8