The Russian 50 Rubles was minted only in 1993. It was part of a set of coins issued by the Russian government that featured Wildlife and Sea life designs. On this coin they used a Dolphin swimming as the design. This pair of Earrings have been very popular for us for years. They are small measuring 3/4″ in Diameter and are very light. We mount them on 14 Karat Gold Filled Ear Wires.