WWI Imperial Russian Army Aluminium Water flask Stamp 1915

Description

On the flask are two stamps - the manufacturer and, on the other side the military reception committee.
The military acceptance stamp "ПБИК 1915" and the imperial eagle are visible.
On the other side there is a half-erased manufacturer's stamp "Ак Чикинъ "/"Company Chikin "
The flask has deformations and minor corrosion, but no holes or cracks.
Volume 0,7 Liters.
Does not leak.
According to the previous owner, the flask was found in a small bag. In my opinion, the bag has a much later origin, but I decided to leave it.
I combine shipping costs for all lots.
All items will  be sent by airmail with tracking number.
Due to the criminal aggression of Russia against Ukraine, the delivery time for parcels is increasing.
But the post of Ukraine works, the parcels go to Poland, and then they are delivered by airmail.