1783-Mo FM 8 R Calico-934 N1 认证号49776796, PCGS号404744

Yonaka-M8-83a - A well-traveled and rare (R2) variety with assayer initials FM. There's a belief that most of these ended-up in China as part of the 19th Century silver trade and that's why the few examples that do surface often contain chopmarks.