1918-1922年西藏七分半卡冈铜币一组五枚,均F-VF. 尼古拉斯‧罗德斯收藏集 - 西藏及尼泊尔钱币纸钞. Tibetan Government, Anonymous, AE 7½-Skar (5), Dode mint, T.E.15-52 to 15-56 (1918 - 1922), struck on an eight-lobed flan, rev. several varieties, including those with central three comma-shapes (norbu dga kyil) running anti-clockwise (YZM 693-715; KM. Y#20), fine to very fine (5)