清代云南“嘉庆拾伍年”两槽五両课税银锭，双槽中间加盖“课”字圆戳，52.6x36.8x13毫米, 重149.7克，中乾AU55。China, Qing Dynasty, Yunnan Province, [Zhong Qian AU55] double-trough silver 5 tael sycee, 1810, stamped Jia Qing Shi Wu Nian (15th Year of Jia Qing) twice, Ke (tax) stamped in between the troughs, 52.6x36.8x13mm, weighs 149.7g, Jia Qing era sycees are generally uncommon, and this example being used for tax is even more desirable
