Hawaii, collection 3:20 P.M. Violet straight line handstamp (Davey 752) on reverse of 1897 cover franked with 1894 2Ā¢ brown tied by Honolulu duplex to North Kohala, cover with printed "Board of Health" corner card at bottom left & "On Hawaiian Government Service" at top right, handstamped on reverse is "Board Of Health" violet oval, hint of mount toning in bottom corners, Very Fine. EstimateĀ $150 - 200. $0 (Image)