Used, with damage at parting line, $35 each; if you want new we have new, stronger, made from aluminum instead of pot metal, our number is 1486 for $59; Ford part number 8BA 6335 Upper Rear Seal Retainer for Flathead Ford V8 1949, 1950, 1951, 1952, 1953 and 1948 trucks, accepts the upper rope seal.  The lower rope seal is retained by the oil pan.