A cover is an envelope used to send a letter. In philately covers can be classified into two different groups. There are commercial covers and philatelic covers. A philatelic cover is an envelope that was intentionally created for stamp collecting. This will include FDCs or First Day Covers, First Flight Covers also know as FFCs along with many other types of events. Mail sent to and from known philatelists are also considered philatelic covers, even if it's just correspondence. Commercial covers or postal history is old mail that was saved. There are many different ways to collect commercial covers. You can collect by region, cancellation type, topic, rate, usage, auxiliary marking, censorship among many other areas. While philatelic covers are often colorful & vibrant, commercial covers are unique.

Mayfair99 offers an extensive range of philatelic, commercial US & worldwide covers for purchase. This includes popular topics, events, town cancellations, censored mail from WWI & WWII, flight covers, naval covers, APO covers & more. We also offer thousands of picture postcards for sale with a good number of topographical as well as greeting & topical cards.

Covers & Cards

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US Naval Covers

US Covers By State

US Flights, Space & Other Event Covers

US Postal Cards & RPOS

US First Day Covers


Great Britain



Australia & Oceania

British Colonies & Territories



Latin America

Middle East



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