The American Plate Number Single Society





Becoming a member
Officers and Directors


Plate Numbers
Hebert's Catalog
Classified ads



American Philatelic Society
United States Stamp Society
Linn's Stamp News
Scott Publishing




Scott C13, Plate number single 20079R

Useful links for collectors

Stamp collecting organizations

 American Philatelic Society (APS)

United States Stamp Society (USSS) (formerly the Bureau Issues Association)

The USSS has a superb page with additional links.

Web site of the USSS's Marginal Markings Committee

  Plate Number Coil Collectors Club (PNC3)

Virtual Stamp Club (VSC)

American Stamp Dealers Association (ASDA)

Canal Zone Study Group (CZSG)

United States Possessions Philatelic Society (USPPS)



   Linn's Stamp News

   Scott Publishing

John Hotchner's column "What to Avoid in U.S. Philately"


APNSS Members' specialties

Jerry Katz specializes in "misplaced F's" on flat plate issues of the 1920's. Here is a link to his web site, showing examples and more.

The late Doug D'Avino's web page illustrating Siderographers' marks and Plate Finishers' initials is inactive as of May 2018. If it has moved, please advise if you have a working link.

Other links

Ron Maifeld's web site on modern booklet plate numbers

Robin Harris's web site on U.S. coil and booklet plate number singles

The American Society for Philatelic Pages and Panels web site.  Some philatelic pages are created using plate number singles.

Todd Uebele's web site specializing in the 32 Flag Over Porch issues gives comprehensive Flag Over Porch information, including up-to-date pricing info.

Ray Coughlin's web site specializing in stamps and covers of U.S. possessions, with information on stamp shows worldwide, philatelic agencies, specialty groups and dozens of other links

The Stamp Collecting Roundup, Don Schilling's site featuring news, links and more about stamps

Joseph Luft's Philatelic Resources on the Web


The Philatelic Webmasters Organization site. PWO's goal is to promote, support and develop philately through philatelic webmastering.

Comments? Suggestions? Have information on a group we should link to? Email the Webmaster: .


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This page last updated February 23, 2019. All links were active and functioning at the time.