西藏乾隆通宝五十七年早期银片样币。PCGS 仅评两枚,此为最高分。另一枚仅得 EF-45。数一数二的极罕品,近年来首次露面。铸打优美,细节俊俏,图文几乎不见经手痕迹,令人爱不释手。多彩包浆锦上添花,更添原始魅力。西藏币,乃至中国币中都属珍罕品,必定能令一众藏家沸腾。CHINA. Tibet. Silver 1/2 Sho Pattern, Year 57 (1792). Chien-lung (Qianlong). PCGS AU-58.L&M-635A; K-1456; KM-C-65; WS-Unlisted; YZM-41. One of only two examples on the PCGS population report, and by far the finest certified, with the other example being a mere EF-45. Given this reality, this example should be taken as a specimen of the HIGHEST RARITY, particularly when considering no other examples appear to have surfaced in the recent past. Delivering a beautiful strike and handsome details, this specimen gives much commendability, with essentially no evidence of handling across the devices. Beautiful and colorful toning punctuates the surfaces, and adds a touch of appeal and charm to this example. An impressive specimen, and one deserved of the attention of any specialist in Tibetan coinage, or Chinese RARITIES more generally.