Just got 5 boxes of the above and one was open. I expected to see the cartridges dated 1949. I pulled one off of the brass stripper clip and it was FA 1936. I thought that the box year was to be the same as the cartridge year.

All the cartridges are of that date with cardboard protector in the center. Not reloads. I was able to pry another box open and the 1939 date was there too.
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