Hawaii, 1871, 1¢ mauve, tied by hollow pin target handstamp on locally addressed cover, matching "Honolulu, H.I., Apr 21" cds; cover slightly reduced at left, Very Fine, a scarce drop letter rate usage. Scott No. 30a  Estimate $100 - 150. Letters deposited in the post office where they were to be delivered were free until a 1¢ rate was imposed in 1876. $0 (Image)