Russian? ring hallmarks help

[rhc13]

Hi,

This ring was my grandmother's (born Lithuania) who was given this as a present c.1940 whilst travelling through eastern Europe.

The hallmarks are on the outside on the base of the ring, and may be cyrilic. I cannot read or identify them so any help is much appreciated.

Many thanks

[Dad]

Hi.

Yes. It ring is from Russian Impire.

Punch is hallmark Riga's assay office (1899-1908)
КЗ - Kliment Zagaevsky - the head of Riga's assay office (1899-1908). Gold. 56 zolotniks = 583.