Had a good day today. Found a 3939S Hipo Fuel pump with Aug 6, 1964 date code. There apparently had been some discussion on the transition from the screw together type pumps to these, with the earliest known being Aug 28, 1964. This helps move the line back to the expected Aug 1, 64 date.
Was wondering if anyone had seen earlier pumps, or had any more information.
Thanks to Fred for the reference.
Did I mention it was a good day?
Rich