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| APS Affiliate #103 |
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| ATA Chapter #94 |
The AG Files
Keywords: stamp errors, Silver, Zuzzolo, Scott 1509, crossed flags, color missing, Flag over Independence Hall, Scott 1622, removal of color, chemical, Copernicus, Scott 1488, Scott R153, inverted overprint, authentication, Philatelic Foundation, Christmas, precancel, Scott 1384, counterfeit, B.E.P., Bureau of Engraving and Printing, Phoenix, Arizona
John M. Hotchner
Errors, Freaks & Oddities
The EFO Collector
The Archives
John M. Hotchner
EFO Corner
The Columns
from Linn's
from Linn's
Articles By
Wayne Youngblood
AG
Files
Ryskamp
on
Computer-Vended Postage
Not
quite
EFOs