Rare pre war M31 messkit in good, heavy used condition. The bottom part is marked HRE 34 and the lid is marked HRE 34 which indicates production by Heinrich Ritter, Esslingen. In my opinion this could be a factory mismatch which left the factory in early 1934 which was made with left over parts from 1933. Extremely hard to find a M31 messkit dated this early!