Need help identifying mark

[Putneypete]

I'm sorry, I've worked out how to post an image, but not how to start a new topic (can't find the menu option). Note not all the goblets have a double strike in left mark




(admin photo edit - images too large - link only - see Posting Requirements )

[Qrt.S]

Kindly show the goblet. Anyway, our object is from the former Armenian Soviet Socialist Republic's capital Yerevan. It is made in 1970 in OEC i.e. Опытный завод "Сувенир", which could be translated like something as Pilot/Experimental Plant "Souvenir". It silver fineness is 916/1000