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Stamps › US › Smithsonian National Postal Museum — Bureau Plate Proofs › 18c Vernal Falls, Yosemite Park, California plate proof
18c Vernal Falls, Yosemite Park, California plate proof

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18c Vernal Falls, Yosemite Park, California plate proof

Smithsonian National Postal Museum — Bureau Plate Proofs · US · English · 1931

Catalog record

LineUS
Set / seriesSmithsonian National Postal Museum — Bureau Plate Proofs
LanguageEnglish
Year1931
DateNovember 27, 1931
Kindstamp
PlaceUnited States of America
ScottPhilippines 357
Mediumpaper; ink (red orange ) / engraving
Regionus
Npm recordnpm_0.309126.114
DescriptionCertified plate proofs are the last printed proof of the plate before printing the stamps at the Bureau of Engraving and Printing. These plate proofs are each unique, with the approval signatures and date. For postal scholars these plates provide important production information in the plate margin inscriptions, including guidelines, plate numbers, and initials of the siderographer, or person who created the plate from a transfer roll.
Oracle ID36597054

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Source credit: Smithsonian National Postal Museum