Forged Stamps of Zürich

1L1-1L4. Zurich Numeral issue, 1843 (red vertical lines) and 1846 (red horizontal lines). The 4r, 1843 or 1846: Frank Aretz, Know Your Stamps, Vol. III, p.66. Reprints and forgeries: The Serrane Guide/ Stamp Forgeries of the World to 1926, p.334,35 (Yvert, Zurich 9,10). Thirteen forgeries of the 4r, twenty forgeries of the 6r , genuine and fraudulent postmarks: Reverend R.B. Earée, Album Weeds/ How to Detect Forged Stamps (Third Edition), Vol. 2, pp.499-506. Forgery of the 4r, 1843 and 1846: A.L. Michael, “My Collection”, The London Philatelist, Vol. 78 (January 1969): 3-7, at pp.6,7. Forgery of the 1843 issue: H. Bynof- Smith, Forged Postage Stamps of Europe and Colonies, Vol. 2, pp.162-67 (and Fournier forgeries of the 1843 and 1846 issues, pp.182,83). Forgeries of the 6r, 1843 and 1846, and fraudulent postmark: Paper LIII, Lowell Ragatz (editor), The Spud Papers/ An Illustrated Descriptive Catalogue Of Early Philatelic Forgeries, pp.126-28. Sperati forgeries, six of the 4r and five of the 6r, 1843 and fraudulent cancellation: British Philatelic Association (Publisher), The Work Of Jean De Sperati, pp.141-43 and Plates 91 and 92. Forgery of the 4r, 1843: George S. Norton, “Spellman Museum Collection Notes”, No.5, November 2001. Characteristics of the genuine stamps: Fritz Billig, Billig’s Philatelic Handbook, Vol. 1 (Third Revised Edition), pp.210-13. Reprints: Scott Classic Specialized Catalogue. Characteristics of the genuine stamps, reprints, private reprints, forgeries: J. Dorn (Publisher), The Forged Stamps of all Countries, pp.215,16. Reprints of the 1843 issue and characteristics of the genuine stamps: Hermann Schloss, Distinguishing Characteristics of Classic Stamps: Europe19th Century (Except Old German States), pp.169-73. Reprints: Edward Denny Bacon, Reprints of Postal Adhesive Stamps And Their Characteristics, p.138.

Source: The Tedesco Index