I need some help with block numbers

[stomperalexames]

Hello everybody! I am new here and looking for some help, I have a 3963512 block dated e239--may 23 1969--- there is no vin nubers by the oil filter area and on the front by pass head area there is only a 7 stamped there and nothing else, there looks like there is no deck clearance marks from machine work done, the area has pits in the metal and even has it by the number 7, the 7 is deep enough to catch your finger nail....... So can you guys help me out, thanks Alex from kansas city