Seeking translation for 5.45x39 Spam can markings

[RCS]

The first 7,62x39mm that came to the USA was from Finland, it was said that Lake City reversed engineered the 7,62x39mm from Finland to manufacture (both ball and blank)

Other cartridges such as 6,5 Carcano, 6,5 MS and the old 30 Remington were used to form the Soviet too.

Some Czech 7,62x45mm was supposed to have been formed in the 7,62x39mm with the headstamps bnx 53 and bnx 54

Best thing that happened was the 22 PPC benchrest cartridge Attachment 86187