The switch from "583" to "585" was implemented after the Soviet Union collapsed. All my items are dispatching within one or two days. Thanks for your interest and check out my other auctions. The item "Vintage Soviet Solid Rose Gold Earrings 14K 583 Aquamarine 5.24 gr Russian USSR" is in sale since Saturday, December 23, 2017. This item is in the category "Jewelry & Watches\Vintage & Antique Jewelry\Fine\Retro, Vintage 1930s-1980s\Earrings".The seller is "rotorfan" and is located in Volgograd. This item can be shipped worldwide.