咸丰当十铁母俞鸿昌十多年前，得咸丰宝泉局当十铁钱一枚，其貌不扬，未引起重视。前些日子，又得咸丰当十铜钱六、七枚，发现有异品一枚，似同铁母，于是找出那枚铁钱，仔细对比，此铜钱异品竟是铁母。此钱铜质青黄，字迹挺直，沟深，底板沙痕细顺平整，字迹细部，如“”... Xianfeng when ten iron female Yu Hongchang more than 10 years ago, had Xianfeng Baoquan bureau when the ten iron money, its appearance, did not attract attention. A few days ago, another Xianfeng when ten copper coins six or seven, found a foreign body, like the same iron mother, so find that one iron money, a careful comparison, the copper foreign currency was actually iron mother. This money is yellow bronze, writing straight, deep groove, floor sand marks fine smooth, handwriting details, such as “” ...