Russia 1 Rouble 1839 СПБ НГ RRRR
Bit# 171 (R3); Extremely rare coin, which has never been sold. Known mintage was only 35 707 pcs, most of them were melted. This piece has an expert certificate with sigantures of 2 different well-known experts (signed by Shiryakov and Averin) from Moscow State Museum.