1950s aluminum flask, brand Red Vyborgetz (Красный Выборжец). It is similar to a flask which was used during World War II. Differences: a slightly larger thread pitch on the lid, however the shape of the lid and the flask itself is the same!
The field bottle is painted green (there are some unpainted too). The bottles are new, however, there are traces of improper storage (scratches on the case). Comes in an authentic cover (made presumable in 1940-s). Covers have no "antique" stamps like 1941. But some manufacturers stamps may present.
You need to select the option (number) before ordering. If any number is not available for selection, then it has already been sold.
Below are more field bottles. Why do several bottles have the same number? Because they are very similar, it is difficult to find differences in them. It makes no sense to assign them different numbers.