Green Number: This is the standard number used to refer to a unique type of seal. Green numbers are listed in the Green Catalog of the Tuberculosis Seals of the United States , published by the Christmas Seal and Charity Stamp Society

PCP: Progressive Color Proof

Printers Mark

Printers, List of

Spring Seals

Test Designs

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Betsy & Chuck
3606 S. Atherton Street, State College, PA 16801-8301
814-466-3469 (phone or fax)
Home page: http://betsychuck.home.att.net
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