top of page


Newly recognized shade of a Scott 381 postmarked on May 12, 1912
If you think you might have a Scott 381 with this new shade of Brown Yellow, submit to PSAG and we will have it chemically analyzed for the
Randy Shoemaker
Jul 26, 20222 min read
159 views
0 comments


Scott 120
PSAG is excited to share this world-class gem with our PSAG followers. Scott 120 Used with light cancel and perfectly centered jumbo...
Randy Shoemaker
Jan 26, 20221 min read
335 views
0 comments


October is National Stamp Collecting Month
October is National Stamp Collecting Month! To celebrate, let's take a look back on the humble beginnings of stamps.
Randy Shoemaker
Oct 19, 20211 min read
117 views
0 comments


U.S. 24c Purple 1870 - 1875
The U.S. 24¢ Purple stamp has been a philatelic mystery for 122 years. As explained in the articles below, these stamps are particularly dif
Randy Shoemaker
Oct 7, 20211 min read
200 views
0 comments


233a – Error of Color (BLUE) Compared to a 233 Ultramarine.
Here is an example of the BLUE error of color variety for the 4c Columbian – 233a. Also attached is a 4c Colombian – 233. This is an...
Randy Shoemaker
Jun 23, 20211 min read
1,341 views
0 comments


“R.F.” Overprints on U.S. Postal Stationery, WWII & Our Newest Expert
Lewis Bussey, PSAG’s new expert on R.F. Overprints. Lewis has studied, collected and maintains a large database of this type of material...
Randy Shoemaker
May 26, 20211 min read
87 views
0 comments


March 2021 - Recently Expertized
The following stamps are exceptional quality and would be an excellent addition to any US stamp collection. PSAG Cert 589619 This is a...
Randy Shoemaker
Mar 12, 20211 min read
356 views
0 comments


The Latest in PSAG Services - Forensic Analysis for Color Varieties
PSAG has now added an extra component - forensic analysis for color varieties.
Randy Shoemaker
Nov 2, 20201 min read
259 views
0 comments
bottom of page