Coconut canteen marked HRE43

Textbook issue coconut canteen marked HRE 43 indicating production by Heinrich Ritter, Esslingen. The canteen is in good used condition and is complete with its original steel M42 pattern cup. Interestingly this example has an aluminium cap marked HRE 43. For more information on these canteens look at my article here; https://fjm44.com/articles/the-coconut-canteen-ritters-mystery-canteen/