In the world of aerophilately (the study of airmail), "Jusqu'à Airmail Markings"
By continuing to study and analyze jusqu'a airmail markings, researchers can gain a deeper understanding of the complex and intriguing world of philately and airmail history. Jusqu-a Airmail Markings- A Study Ian McQueen
originally published in 1993, is considered the definitive ground-breaking research on the subject. In the world of aerophilately (the study of
Forgeries of Jusqu’à markings exist. Unscrupulous sellers have added fake handstamps to common surface mail to inflate value. McQueen’s study includes detailed diagrams of genuine lettering, spacing, and ink colors. For example, he noted that genuine “Jusqu’à Casablanca” handstamps from 1929 have a distinctive broken ‘A’ in Casablanca—a die flaw that forgers miss. Rarity and desirability: Scarcity depends on route, period,
Ian McQueen’s "Jusqu’à Airmail Markings: A Study" (1993) and its 1995 supplement are essential, comprehensive reference works documenting postal markings that indicate the limit of airmail service. The studies catalog various handstamps and "mute" bars used to show where mail transitioned to surface transport, providing crucial context for philatelists interpreting complex, non-standardized routing. Learn more about the study from www.academia.edu
McQueen's study identifies several types of jusqu'a airmail markings, including:
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