American Topical Association National Topical Stamp Show:
"The American Topical Association is composed of members who specialize in thematic or topical philatelic collecting. Those who share a specific topic band together to form "study units." These units promote their specific topic and encourage research on that topic."
'via Blog this'
"150 years of the UPU 1874-2024" souvenir sheet on cover from Azerbaijan
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*Bloc-feuillet "150 ans de l'UPU 1874-2024" sur lettre d'Azerbaïdjan *
En 2024, *l'Union Postale Universelle (UPU)* célèbre son 150ème
anniversaire. Le 9...
4 hours ago
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