俄罗斯伊丽莎白金币 PCGS AU 50,Russia, Elizabeth (1741-1761), gold 10roubles, 1757, cross of 4 shields on obverse, date at top, Elizabeth facing right on reverse, (KM 28.2), mintage of 8604, PCGS AU 50, one of only three graded by PCGS, original mint lustre and extremely rare