Watch List notes:

COINS, 錢幣, CHINA – TAIWAN, 中國 - 台灣, Taiwan 台灣: "Old Man" Silver Dollar 老公銀, ND (1841-50), Obv God of Longevity, "官局" at five o'clock, Rev cauldron, assayer's chop "成記" below, 25.76g (L&M 320; Kann 1h). Only one chopmark on each side other than the official assayer's chop on the reverse, good very fine, a rare variety.
ex Hong Kong Coin Auction 35, Baldwin / Ma Tak Wo / Gillio / Monetarium, 29 August 2002, lot 287

Estimate: US$5,000-7,000