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| APS Affiliate #103 |
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| ATA Chapter #94 |
The EFO Collector: Archive: Issue of October 1980
Keywords: stamp errors, stamp errors, EFO, What is a Misperforation? 3rd B.I., Hotchner, Third Bureau Issue, Weiss, waste, electric eye perforating, 1933, shrinkage, drying, blue papers, clay papers, watermarking, rotary press dry printing, 1954
John M. Hotchner
Errors, Freaks & Oddities
The EFO Collector
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John M. Hotchner
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from Linn's
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Wayne Youngblood
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