United States Postal Service

:This article describes the United States Postal Service. For the band named The Postal Service see The Postal Service.

Postage stamps

All unused US postage stamps issued since 1861 are still valid as postage at their indicated value. Stamps with no value shown or denominated by a letter are also still valid at their purchase price.

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Copyright and reproduction

All US postage stamps and other postage items that were released before 1978 are in the public domain. After this time they are copyright by the postal service under Title 17 of the United States Code. Written permission is required for use of copyrighted postage stamp images. http://www.usps.com/communications/organization/noncommlicensing.htm

Related Topics:
Public domain - United States Code

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PC postage

In addition to using standard stamps, postage can now be printed from a personal computer using a system called Information Based Indicia. Authorized providers of PC Postage are:

Related Topics:
Personal computer - Information Based Indicia

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• Stamps.com
• Pitney Bowes
• Endicia Internet Postage