1937年蒙古20蒙哥。列宁格勒铸币厂。MONGOLIA. 20 Mongo, Year 27 (1937). Leningrad Mint. NGC MS-63. 1937年蒙古20蒙哥。列宁格勒铸币厂。精选品相颇<strong>罕见</strong>。铁灰色币面光泽亮丽,NGC 评鉴中数一数二,仅一枚更高分。MONGOLIA. 20 Mongo, Year 27 (1937). Leningrad Mint. NGC MS-63.KM-14. Quite <strong>RARE </strong>when encountered this brilliant and choice, the present steely gray minor offers great vibrancy and stands as one of the finest seen at NGC, as just one specimen has been graded finer.