This ring was handed down to me by my grandmother, it was her wedding ring, it is engraved with her name and date (1939) but I believe the ring was also handed down to her and I have tried to identify the initials (Russian гc) and the only Russian jeweler I could find from the era was Grigory Sbitnev, but when looking at his stamp, it looks slightly different, so I am not sure, also it seems to lack other stamps, like the city stamp etc. If anyone is able to lead me in the right direction, I would appreciate it. Thanks.