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I have a couple of National 62 pumps which have serial numbers that end in ...66 and ....68. Does anyone know if National does serial numbers that only end in even numbers or was there originally a ....67?

My records show 01001 to 01633 for serial numbers for pumps made from 7/26/48 to 1/3/49
Ron

Thanks Ron! I think my pumps may have been manufactured slightly later. They both have 4 52 way to the right of the actual serial number. I am guessing they were built in April of 1952. However, thanks to you, it is clear that National did use odd numbers as well as even. I probably should have posted the entire numbers which would be 07266 and 07268. I appreciate your help.