This number stamped BEHIND the fuel pump is your serial number... should look like this
1930 serial numberone of the guys here can give you more info on the engine based on this number...
Also if you look around on the engine under the casting number 835501 should have a
date code like C 11 0, which would be month c=3rd month = March, then Date number 11 = 11th day of month, then single year code 0 = 1930.
Then the bowtie and a number, most believe the number to be the foundry identifier. have not seen any info to confirm this... YET