Japan, 1926-37, 10s dark blue. Tied by bright blue "Yaruto, I.J.P.O. Nanyo, 16.10.6" foreign office cds on 1931 cover to the United States, stamp with small scuff, otherwise Very Fine, an extremely rare usage from this Japanese P.O. in the Caroline Islands. Scott No. 196  Estimate $500 - 750. $0 (Image)