National Duck Stamp Collectors Society

Anthony J. Monico
PO Box 43
Harleysville, PA 19438
E-mail Us:

American Philatelic Society

100 Match Factory Place
Bellefonte, PA 16823

American Revenue Association

PO Box 728
Leesport, PA 19533

American Stamp
Dealers  Association

PO Box 513
Centre Hall PA 16828
E-mail Us:

Carriers and Locals Society

John Bowman
14409 Pentridge Dr.
Corpus Christi, TX  78410
E-mail Us :

Confederate Stamp Alliance

10194 N. Old State Road
Lincoln, DE 19960-9797
E-mail Us:

Errors, Freaks & Oddities Collectors Club

955 S. Grover Blvd., #65
Kingsland, GA 31548-5263
E-mail Us:

U.S. Philatelic
Classics Society

2913 Fulton
Everett, WA 98201
E-mail Us:
PSAG is a stamp authentication and grading company specializing in United States and Canada. With decades of experience, PSAG experts are drawn from the best in philately.  We will be posting articles by noted authorities, streaming tutorial videos, interesting and helpful facts about our hobby, links to clubs and societies and much more.  PSAG is taking Stamp Authentication and Grading to the next level.

Philatelic Stamp Authentication and Grading, Inc., was formed in early 2009 by noted U.S. Classics Expert, J. Randall Shoemaker. With his 31 years experience in professional expertizing and grading and being the Founder of PSE, his experience in this field is vast. Under his guidance, PSAG has put together a most impressive committee of Experts, technology and innovation. It is our goal to provide you with the highest level of expertise, customer service, responsiveness and value for your expertizing dollar. This website will be continually evolving into an interactive site that will display information historically unavailable to most collectors. Please return regularly and see how we can further serve you.
About PSAG, Inc.
The following stamp images and their associated relative centering grade are to show, in visual terms, what is meant by each grade. Faults and their affect on the overall GRADE are NOT factored into the examples below.

View Photo Grading Guide
J. Randall Shoemaker Founder, Committee Chairman
  • American Stamp Dealers Association - Dealer Member
  • Florida Stamp Dealer Association, FSDA
  • National Stamp Dealers Association - Dealer Member
  • American Philatelic Society, Member #68359
  • United States Philatelic Classics Society Member
Extended Bio

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United States
Canadian Provinces
Canal Zone
Expertizing and Authentication
Expertizing and authentication is very important in todays stamp market with many stamps worth significant value. Collectors who spend more than $50 per stamp are considered advanced and can amass a valuable collection over time. As they add scarce and expensive items, it is important to be sure you are getting full value for your collecting dollar.. READ MORE
How Grading is Done
  The use of grading terms to describe the relative quality of a stamp has been going on since the very beginning of stamp collecting in the mid to late 1800’s. Beginning in 1987, a system was developed to finally begin standardizing the terminology and numerical grading of postage stamps. The system was built on the generally accepted definitions of terms and added the use of a numerical grading scale to further define the smaller gradations between the certain adjectival terms.. READ MORE
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1847-1856 Imperforate Issues Series 1-17
1847-1856 Imperforate Issues Series 1-17
1847-1856 Imperforate Issues Series 1-17
Grading Singles, Pairs, Plate Blocks, Booklet Panes and Souvenir Sheets for US & BNA
  Authentification and Grading Services US Postmaster Provisionals ~ Singles ~ Front-of-the-Book~ B-O-B ~ Coil & Imperforate pairs ~ Blocks  ~ Plate Blocks ~ Perforated Souvenir Sheets ~ Duck Hunting~ Permit PSA’s ~ Booklet Panes ~   Confederate States of America General Issues ~
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Main Office  PO Box 41-0880 Melbourne, FL  32941-0880  
Midwest Stamp Dealer's Association (MSDA)

United States Possessions Philatelic Society, USPPS

The National Stamp Dealers' Association

Florida Stamp Dealers Association