Articles in FFE #21: Foreword by the President of the A.I.E.P. by Thomas Mathà A Few Words from the Publisher by Claes Arnrup Yves Vertommen 1957-2024 by Vincent Schouberechts Analysis of the Plating and Perforation of Stamps of the Medallion Issue as part of the “Expertising” Process by Yves Vertommen Marsden’s covers with the Mozambique error by Luis Frazao The History of A.I.E.P. 2004 – 2024 by Thomas Mathà LES LOUPES et L'ECLAIRAGE GLASSES and LIGHTING by Jean François Brun FAKE WAR TAX SURCHARGES OF THE ADMIRAL SERIES FROM CANADA FAUSSES SURCHARGES DE TAXE DE GUERRE DE LA SÉRIE AMIRAL DU CANADA by Richard Gratton, FRPSC The American Hitler forgeries: the Case of Operation “Cornflakes” by Jouni Takalo FAKES OF THE 1903 EDWARD VII 7 CENTS FROM CANADA FALSIFICATIONS DU 7 CENTS ÉDOUARD VII DE 1903 DU CANADA by Richard Gratton, FRPSC Observations on forged and fake Large Hermes Heads of Greece (1861-1886) by Dr. Kyriakos Papathanassiou, FRPSL, AIEP CORFU “106” DIAMOND OF DOTS NUMERAL POSTMARK USED FOR THE PRODUCTION OF FORGED LETTERS by Michael Tseriotis The Forged ОБРАЗЕЦЪ Overprint Falsche ОБРАЗЕЦЪ – Aufdrucke by Dr. Wolfgang Leupold, AIEP The Michel number 307 is popular, but unfortunately rare Die Michelnummer 307 beliebt, aber leider selten by Rolf Tworek THE GRONCHI ROSA FORGERIES by Paolo Vaccari Samos, the provisional “map” issue of 1912 by Joost Meijer NEW CANADIAN COUNTERFEITS DISCOVERED IN 2022 NOUVELLES CONTREFAÇONS CANADIENNES DÉCOUVERTES EN 2022 by Richard Gratton, FRPSC, AIEP Spectroscopic and chemical examinations of the red and brown vignettes of the Orient Express by Ute Dorr FRSPL, Dr. rer. nat. Elmar Dorr FRPSL