Pre war matching M31 canteen marked CFL 38 in unissued condition

Textbook pre war M31 canteen in complete matching and unissued condition. All the parts (strap, cap, flask, cup and cover) of the canteen are nicely marked CFL 38 which indicates production by Carl Feldhaus Aluminium-und Metallwerke, Lüdenscheid in 1938. The canteen is a typical pre war example with high quality materials!