(Norton Patent) New-York JA 29 '61, perfect strike of duplex with circular grid canceling 3¢ dull red (26), small tear, on orange cover to Warner N.H., receipt docketing "Jan. 31. 1861" at left; small edge and flap tear, clean and Very Fine, a rare example of the 1861 Norton duplex patent, ex-Richard B. Graham. Estimate  $200 - 300. $0 (Image)