Lot 713
713
unused Block of Four 6c-24c 1918 Air Post (C1-C3), center line blocks of four, fresh, two 6c, two 16c and one 24c never hinged, one 16c stamp tiny natural inclusion, otherwise fine set, Scott retail $925.00 est.

Details
unused Block of Four 6c-24c 1918 Air Post (C1-C3), center line blocks of four, fresh, two 6c, two 16c and one 24c never hinged, one 16c stamp tiny natural inclusion, otherwise fine set, Scott retail $925.00 est.