I have deciphered the casting numbers on my engine installed in my '50 to discover I have a 235 cast in 1959 (using lucky mold number 13). I can't find any info on the serial number on the distributor pad, F325JC703. The 703 looks hand stamped.

Any help would be appreciated.

Sort of stock 1950 Chevrolet 3100
235 (The engine shread) (Engine assembly)- 4 speed - 12 bolt - stock front axle with power disc brakes