Original 8mm ammo can early variation typically for Maxim 08 and 08/15 though used with MG34 and MG42 machine guns. These are identifiable by pre-WW2 pattern toggle latch and handle. They are also slightly heavier than the later Patronenkasten 34.
This particular ammo can has the markings "WURTT. MET. FABR. 47" This manufacturer can be traced to the WMF Group (formerly known as "Württembergische Metallwarenfabrik") is a German tableware manufacturer, founded in 1853.