GREAT BRITAIN 1964 (MNH) 9D BOTANICAL CONGRESS SIGNED CYLINDER BLOCK
9d Botanical Congress ordinary cylinder 2D–2C–2B–2A block x 4 signed in the lower margin by stamp designers Michael (1921–2009) and Sylvia Goaman (1924–2006). Scarce. Fresh and fine. Mint never hinged. SG657; SC416