Check out these three boxes from “ak” (formerly a Sellier & Beloit plant). Notice that the 1943 dated box has no maker identification at all. Of course, the rounds inside are all standard “ak St+ 5 44” SmE. The label also has the standard “T.N.” code seen on “ak” boxes.
I can’t imagine why, at this point in the war, they would omit the factory code from the label. It certainly appears deliberate as it was removed from all the components as well.
Anyone out there have any thoughts?