Is this uncommon? FA 71. Is the number on the handle a year of re-pack 1982?
A plain vanilla 1959 ammunition box from Frankford Arsenal. One of 40 lots of Match M72 manufactured that year. The “1982” on the handle is not a year. It’s an inspector or packing number.
BTW, your yard seems to have some sort of green fungus. Not the healthy looking brown color like mine.