Hawaii, Revenue, 1901 "Not Liable To Duty", Treasurer's Office, lilac non-denominational stamp, tied by purple "Bureau of Conveyances, Territory of Hawaii, Apr 11, 1912" cds on 4 page mortgage document for parcel of land in Honolulu, Very Fine, a rare on document usage. Estimate  $300 - 400. Little is known about this stamp, although it seems to have been used on tax free property conveyances, possibly those involving the government. $0 (Image)