Casting about foreign silver coins academic reign, there are three versions: a saying that Chinese and foreign silver Tongbao Xianfeng four years (1854), Shanghai Jianghai customs establishment, commissioned by the administration of foreign advanced mint; another argument that the Chinese and foreign silver coins is British Tongbao mint on behalf of Shanghai cast the special tax for silver, Xianfeng eight years (1858) found there; there is a saying that China is North Korea Korea Tongbao silver emperor 21 years (1884) code round casting bureau,
此藏品极为罕见、为不可多得的收藏重器、保存品相完整、有巨大的收藏价值、及投资价值、
This collection is extremely rare, is a rare collection of Jack, save product phase, complete collection value, and huge investment value,