Country | Organization | |
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Ireland | Irish Philatelic Traders Association (IPTA) |
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Israel | Israel Philatelic Federation (IPF) |
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United States | Lighthouse Stamp Society |
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United States | National Stamp Dealers Association (NSDA) |
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Netherlands | Nederlandsche Vereeniging Van Postzegelhandelaren (NVPH) |
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Norway | Norsk Frimerkehandler Forening (NFHF) |
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Austria | Österreichischer Briefmarken- und Münzen Händlerverband (ÖBMHV) |
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Malaysia | Penang Philatelic Society |
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Internet | Philatelic Webmasters Organization (PWO) |
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United States | Polonus Polish Philatelic Society |
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Canada | Postal History Society of Canada (PHSC) |
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Internet | Railway Philatelic Group |
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Australia | Rhodesian Study Circle |
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New Zealand | The Royal Philatelic Society of New Zealand |
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Switzerland | Schweizer Briefmarken-Händler-Verband (SBHV) |
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United States | Scouts On Stamps Society International |
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United States | Society for Costa Rica Collectors (SOCORICO) |
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Sweden | Sveriges Frimärkshandlareförbund (SFHF) |
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Switzerland | Universal Postal Union (UPU) |