Hawaii, Interior Department/Gov'nt Survey,/Hawaiian Is. Unlisted blue oval handstamp used a frank on cover to Makawao, Maui with Honolulu, H.I. cds & patent target cancel, cover stain & tiny cover fault, F.-V.F., this rare marking was in use only during six month survey with less than 10 employees. Estimate  $500 - 750. $0 (Image)