Lot of 6¢ US Plate Block Stamps MNH Explorers Monuments Historic Leaders

Lot of vintage U.S. 6¢ commemorative plate blocks, all Mint Never Hinged (MNH), featuring explorers, generals, and historic monuments. Collection includes: •Marquette and Joliet Explorers •Fort Snelling Historic Site •General Douglas MacArthur •Historic Landmarks Plate Blocks •Valley Forge Winter Encampment •Maine Statehood Sesquicentennial •Washington at Valley Forge All plate blocks are in great condition, with original selvage and inscriptions. Crisp colors, no hinge marks. Perfect for collectors, dealers, or investment!