Bracelet russian mark

[mysterling]

Hello, I ask please for help in identifying if possible the trademark of this object. I understood that it is Russian and from the 50s and that the number 7 identified a group of artisans.
But I don't know if the symbol identifies the city or the silversmith. Also near the hammer and sickle symbol is a sign ∧
Thankyou!

[AG2012]

Hi,
Soviet JEWELRY FACTORY "RUSSIAN GEM" Leningrad (St Petersburg)
ЮВЕЛИРНЫЙ ЗАВОД «РУССКИЕ САМОЦВЕТЫ»

Regards

[mysterling]

Many many many Thanks!