"583" was the most commonly-used type of gold in the Soviet Union, while "585" or 14-karat is most common today. The switch from "583" to "585" was implemented after the Soviet Union collapsed. I dispatch my items within one or two days.
Thanks for your interest and check out my other auctions. This item is in the category "Jewelry & Watches\Vintage & Antique Jewelry\Rings". The seller is "rotorfan" and is located in this country: RU. This item can be shipped worldwide.