I have $50.05 Face Value of unused U.S. postage stamps. Will trade for (2) 1964 Kennedy Half’s & (2) 1964 Roosevelt Dimes. (about $25.00 silver melt value). Stamps were a part of a stamp collection, very few had Hinge Mounts on back. Mounts have been removed — all still usable for U.S. postage. Free shipping to CONUS