Watch List notes:

COINS, 錢幣, INDONESIA – JAVA, 印度尼西亞 - 爪哇, Java 爪哇: Gold ½-Rupee, 1815 AH1230 (KM 248a; Sch 590 RRR; Prid 3). In NGC holder graded AU50, weakly struck, very rare.
ex Spink Singapore Auction, 21 June 1997, lot 94
ex Virgil M Brand Collection, Sotheby, Zürich, 14 June 1985, lot 291

Estimate: US$8,000-10,000