British Guiana 1850-51 ‘Cotton Reel’. 12 Cents Black on Blue Wove Paper SG5. A superb used cut square example initialled ‘EDW’ (ight) with Demerara 29.4.51 circular date stamp. Probably the finest example in existence. Accompanied by certificates of authenticity from the British Philatelic Association (BPA) and Peter Holcombe.