Stamp collectors, also known as philatelists, may purchase postage or revenue stamps, or any number of related items, for their collections.
Postage
Postage stamps are used to indicate that the fee for mailing a letter has been paid.
Africa,
Asia,
Europe,
North America,
Oceania,
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Postal History
Specialists use letters and covers to learn about a country's postal history.
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Topicals
A topical or thematic stamp collection focuses on a specific subject.
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