1-6, Queen’s head, perf. 121⁄2, 1874-75. Panelli forgeries: Herbert G. Porter, “The Posts and Postage Stamps of Lagos” (from Philately in Scotland), Stamp Collecting, Vol. 45 (February 22, 1936): 609,12.
26. 6p olive-green Queen’s Head, 1882-1902. Varro Tyler, Linn’s Focus on Forgeries: A Guide to Forgeries of Common Stamps, Revised, Expanded Edition, p.151.
31-38. High values of Queen’s Head issue, 1882-1902. Sperati forgeries of the 2sh6p, 5sh, 10sh: British Philatelic Association (Publisher), The Work Of Jean De Sperati, pp.51,52 and Plate 12; two additional Sperati forgeries of the 5sh: Robson Lowe and Carl Walske, The Work of Jean De Sperati II/ Including Previously Unlisted Forgeries, pp.22,23 and Plate B. Robson Lowe, “Sperati and His Craft – III”, The Philatelist, Vol. 19 (July 1953): 247-51, continued at Vol. 20 (October 1953): 2-4. J. Dorn (Publisher), The Forged Stamps of all Countries, pp.99,79.