is it sterling steel, or silver slick - how the f... should i know...
OK, it is Norwegian Raufoss ammo from 1937, and with a silver bullet...
The M98K is a code 337 from 1939...
Probably steel jacket with cupro-nickel plating to keep the steel from rusting. That was the most common type of jacket material in Europe, where gilding metal never caught on until after WWII.
