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The 1st picture is just the sand casting core ID numbers for the head when it was cast as far as I know. The 2nd is the head casting number which indicates its a 1956-62 235 head. For overall engine ID, need the numbers stamped into the machined serial number flat on the block, passenger side just behind the distributor. It wouldn't hurt to have the block casting number, which will be on lower side of the block on the passenger side and the block casting date codes sligtly forward and above the starter. Those are needed if your serial number pad is blank, which could indicate it's a service replacement engine.