Aluminium M31 canteen marked EEF 43

Excellent textbook late war M31 (Feldflasche) canteen with aluminium flask in stone mint unissued condition. The flask and the felt cover are both nicely marked EEF 41 which indicates production by Ewald Eigenbrod Aluminium-und Metallwarenfabrik, Freiling  in 1943. In textbook configuration with an excellent black urea resin (type of bakelite) cup marked 46/S which is usual for this manufacturer. Excellent matching canteen in a condition that would be very hard to upgrade!