Just a "Soviet" object not Russian. Made in Артель "Художник" г. Москва 1958 (Artist Artel Moscow) in 875/1000 silver. I have no idea what the last picture means. It is too blurry.
I believe that artel "Artist" was enterprise of Kubachi. Then this enterprise began to be called "Kubachi Art Combine". Products of the Kubachi masters were punching by Moscow assay office.