U.S. Sanitary Commission, Army and Navy Claim Agency, imprint on cover to postmaster in Winchester, N.H., franked with 2¢ Blackjack (affixed over right edge and split when opened) tied by grid handstamp, reverse with allover agency information text, F.-V.F., scarce illustrated in Kantor Sanitary Fairs (page 70, SF2 rarity), ex-Kantor. Estimate  $100 - 150. $0 (Image)