Well into the early 1940s, a lot of US-made ammo was still being delivered from the Factories in Tin-Lined Wooden Boxes (either in Card packets or already Linked.)
“Combat Cans” – the Ubiquitous M1 and M1A1 Cans of .30 cal and the similar .50 cal cans only became widespread by the end of 1942, eliminating Wood crates for many applications, especially in Rifle ammo and .50 cal for Ground use; .50cal for Air-use was still delivered packeted to a certain extent, and of course Linked for the USAAF.
The rip-top cans were emptied at the Airfield, and the Linked ammo transferred direct to the Aircraft ( with special types (Tracer etc) added from Carton Packs.) Later, when Linked ammo was supplied in the Steel Hinged cans, the belts were already “Made up” in a pre-determined sequence…but local Aircraft Armourers still made their own “variations” as requested by Aircrew.
Due to the “expendability” of such lightweight tinplate cans, they are a “rare” item these days…as are the original Dovetailed Wood Boxes, with Screw down lids and Rope handles.
One still sees this Type of Case in Wartime Pistol ammo ( one came up some time ago, .45ACP), but by and large, they all went either to Firewood, toolboxes, or scrap.
And they were not a “Field expedient”, as mentioned above, but “Factory made”. The seemingly rough soldering was probably due to the manufacturer being a “Tin shop” (Roofing, Plumbing, etc) rather than a “sheetmetal” fabricator, with more modern seaming equipment.
The Overlap of the Usage would see Tin Liners still in use in 1943-44, and I don’t know the early introduction date of the .50 Steel can (M?).
Definitely the “soldered top–sardine can rip-off handle” type can.
Also, Treshkin, the Fact that you have it , in your locality, ( Russia) would make it part of the US Lend Lease Ammunition shipments to the Soviet Union. I don’t know how much .50 cal ammo was sent to the USSR, ( Aircraft were part of L-L) but .45 ACP certainly was, as was .30 cal (for Browning MGs in US Tanks supplied…Southern Front.)
Nearly all US L-L Ammo shipments were Wood Crated (with Tin Liners).
At least early on the War (1940 to 43).