GREAT BRITAIN 1991 (MNH) ORDNANCE SURVEY BICENTENARY PLATE BLOCKS
Ordnance Survey Bicentenary imprint/plate blocks x 6 (4 items): 24p (1A–1B–1C–2D), 28p (1A–1B–1C–1D–1E–1F–1G), 33p (1A x 12), 39p (1A x 4). Fresh and fine. Mint never hinged. SG1578-1581; SC1392-1395
