Nice complete vintage calculator. In determining the date, the only real clue I find is the 73 date on the charger. Cosmetically very clean, some light wear on the silver paint around the memory keys. Sort of a rub spot on the vinyl case on one side, case very clean otherwise, zipper works great.

I tested with both batteries and the charger, everything works great. All the displays light up and complete. The manual is clean but has a bit of age toning around the perimeters.

Has the original mailing box which has some wear and darkening and notes but intact. The back tag of the calculator has a different model than on the front, TXI-8646A. Not sure but I think this might have been made by Texas.