1861, 1¢ blue, horizontal strip of three. Few flaws, tied on cover to Santa Rosa by two full strikes of fancy Flag and "Union" slogan cancel, with matching "Healdsburg, Cal., Aug. 6, 1863" cds at left; couple small cover stain spots, Very Fine, a remarkable patriotic fancy cancellation usage from Healdsburg, California and extremely rare on the 1861 1¢ issue, ex Knapp (with auction lot number affixed). Scott No. 63  Estimate $3,000 - 4,000. $0 (Image)