Linn’s Stamp News |
USPS press sheets: more questions than answers
Linn’s Stamp News That's the opinion of Cincinnati, Ohio, collector Jim Siekermann, one of the authors of Guidebook and Checklist — U.S. Postal Service No-Die-Cut Stamps 2012 to 2015, the definitive study on the sheets. In an e-mail to Linns Stamp News, he outlined … |
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