Garnet ring with digits on hallmark

[olga_kehl]

Dear Colleagues,
Do you have any ideas about hallmark on this garnet ring?
Many thanks.

[AG2012]

Hi,
The ring was too big and the owner had it resized; when soldered the state mark (star 875) was lost.
Клеймо 2ЛЮ stands for "Русские самоцветы" in Leningrad.
Regards

[olga_kehl]

Brilliant, MANY thanks =)