Imperial glass canteen ?

[PanzerVI]

Hey folks

I've been advised to turn to this Imperial section for a debate on some glass canteens. It happened I came across someone selling some old pharma glass bottles and I believe 2 of them are soviet glass cantens. Could anyone with a trained eye in this sector shed some light on this please ? Am I really looking at 2 glass 1940 soviet canteens ? Some say the darker one maybe a WW1 ersatz for the prussian army (looks similar in pattern to the aluminum one). Thank you kindly

[Suimpftarn]

Hello!

White glass rectangular canteen - Soviet WW2.
Dark green - German WW1

[Chip M]

WWI era German glass canteens have a flat oval on the bottom, usually with a manufacturer's initials. They do not have a rounded bottom.

Chip

[Suimpftarn]

You are absolutely right, I was too hasty with conclusions. Until that moment, I thought that bottles with such a "rounded" neck - German. But in Russian forums they write that these bottles with an oval bottom - Russian WW1.

[PanzerVI]

So left one is RKKA and right R.I.A ? Is that correct ?

[Westfront.]

Here are two German glass canteens made by different manufacturer,s.

[PanzerVI]

Here are two German glass canteens made by different manufacturer,s.

How can one differentiate them from R.I.A glass canteens Westfront ?

Thanks