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• Prism Research
Offers collectible new issue stamps from all over the world.
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• Professional Stamp Experts
Offers grading and authentication services including 19th and 20th century, fancy cancels, proofs and essays, locals and carriers, all postal history, and specimens.
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• RKA Covers
Dealers of quality U.S. covers including first day covers, postal history, air mail flights, zeppelins, and navals. Produces two lines of first day covers.
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• Scott Publishing Co.
Offers information and products to help stamp collectors identify, value, and organize collections.
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• SCS Specialties
Offering gold plated money clips with Federal duck stamps on them.
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• Stamp Vault
Offers worldwide new issue stamps. Specializes in topicals and also features subjects, such as sports, entertainment, and art.
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• StampFinder
Stamp offerings of dozens of dealers from around the globe.
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• Stampville.com
Provides a wide range of philatelic products and services.
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• Topical Stamps
Offers packets, lots, related supplies, philatelic resources, and much more.
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• The U.S. Collector
Offers 19th and early 20th century U.S. stamps and covers for collectors.
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• Vilmar Collectibles
Specializing in military, naval, and prisoner of war covers, letters with historical content, documents, photographs, and related paper ephemera.
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