German WW1 canteen need help identifying

[LE LOUP DES MERS]

I scored on this WW1 canteen at an antique store, they had it labeled as vintage canteen for $24. I don't think they knew what they had. It's definitely original I have no doubt on that. I need help figuring out what type of canteen this is. From my research it appears to be a medical/mountain canteen. It's dated 1915 I can't quite make out the makers mark. The cover is made of wool and has a khaki colored carrying strap. The wool/leather is damaged in some spots but from my understanding that's normal for a 100 plus year old canteen. All the ones I saw online had some type of damage, id imagine finding one in mint condition would be rare. I tried to show all the holes on the cover the best I could without trying to damage the cover. 

I may have scored bigger then I thought, I didn't realize WW1 medical canteens are rare to find. If this is infact what I have I did way better then I thought. 

[RRA227]

Nice. Shame it has no cup. Shoulder strap should be leather. Ricn A. in Pa.

[LE LOUP DES MERS]

Are WW1 cups hard to find? I may get a repro for the time being just to have something with it. I figured the khaki was probably incorrect. Do you know what the khaki strap originally would of went to?

[RRA227]

No idea. Here is mine. It was $25 at the flea market.   Rich A. in Pa.

[patches]

Here's one repro Medical Cateen Cup, looks well made.

 

https://nestof.pl/en/products/germany-1933/fieldgear/field-bottles-mess-tins-and-accesories/german-medical-gj-canteen-cup-aluminium-unpainted-repro-11427.html

[LE LOUP DES MERS]

I actually ended up selling it to a ww1 german collector.