M31 canteen marked ESB 38

Textbook M31 pattern canteen in excellent condition. The canteen is nicely marked ESB 38/39 which indicates production by Eduard Sommerfeld, Berlin, the difference in years is the result of a factory mismatch made in January 1939. The strap is marked Deutsches Rotes Kreuz Kreisstelle Kassel-StadtThe canteen is simply in good complete condition and would be hard to upgrade!