China
Yunnan. Gold 5 Dollars ND (1919) MS62 NGC, Kann-1526, L&M-1058, KM-Y481. Obv. 3/4 facing bust of Tang Chi-yao. Rev. Crossed flags with numeral "1" below the tassels. Well struck, and lustrous, with only a few light marks. No one has yet determined the exact meaning of the numeral 1, or 2, on the reverse of the $5 and $10 of this type.
Estimate: 4000-4500 USD