Watch List notes:

COINS, 錢幣, CHINA - REPUBLIC, GENERAL ISSUES, 中國 - 民國中央發行, Chang Tso-Lin 張作霖: Silver Dollar, Year 15 (1926), Obv facing military bust, "陸海軍大元帥" above, Rev "紀念" in open wreath with sun and rays, "中華民國十¤¬年" above, "ONE DOLLAR" below (L&M 868; Kann 685). About uncirculated, extremely rare.
ex Ma Ding Xiang 馬定祥 Collection, China Guardian Auction 嘉德, 14 May 2005, lot 4045

Estimate: US$20,000-30,000