If you look at the year scale you can relate when things happened in the cash register era. Not all You will find your serial number somewhere on the front of the register. Usually Chart 1 - Manufacture Dates for New NCR Cash Registers
Anyone have a date and serial number range on the 700 MLs? Remington's site says they don't have those records. is accurate that means they made approximately 200,000 MLs in the first two years of production.