These are the standard Wehrmacht issue from 1933 on, replacing the 1909 type which carried 60 rounds as opposed to 30 in the later model. In this case, one is a Berlin product, the other being made in Vienna - a regular 'anschluss'! Although they are not strictly a pair, they have obviously been together for some time.

This is the standard German leather harness for supporting ammunition pouches carried either side of the belt buckle on the leather waistbelt worn by all members of the armed forces, other ranks at any rate, including naval and Luftwaffe units in ground roles. There is a faint but legible RB number stamped on one of the forward leather straps.