太上咒圆穿花钱，背玄武龟蛇，金元（公元1115–1368），58.5*1.7mm，重26.9g，中乾真品。此钱右人为玄武，也称真武，其辨识为足下之龟蛇合体。此钱为同类之少见版，一个主要因素是其厚度仅1.7mm，而后版或后铸的厚度通常可达2.5mm。考虑到它的直径为58.5，我们将其断为金元时期，但它有可能为宋版。 China: Jin-Yuan Dynasty (1115–1368 CE), coin-shaped charm with round central hole, obverse inscribed Tai shang zhou (太上咒), reverse inscribed Taoist spell character with human figure standing on tortoise and snake, 58.5*1.7mm, 26.9g, Zhong Qian Genuine. This piece is of a rare edition that has been seldom seen before. The Taoist deity standing on the right of the obverse is evidently Xuanwu (玄武), who is also known as Zhenwu (真武), who is identified by the intertwined tortoise and snake underneath his feet. The rarity of the piece is evidenced by the fact that it is only 1.7mm in depth, suggesting itself as an earliest edition of the same type dating to the Song dynasty. Later copies or recasts tend to be much thicker, around 2.5mm or more. Considering its diameter of 58.5mm, it is dated here to the Jin-Yuan period.
