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Stamps › US › Smithsonian National Postal Museum — Bureau Plate Proofs › 7c Bas Obispo -- After plate proof
7c Bas Obispo -- After plate proof

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7c Bas Obispo -- After plate proof

Smithsonian National Postal Museum — Bureau Plate Proofs · US · English · 1939

Catalog record

LineUS
Set / seriesSmithsonian National Postal Museum — Bureau Plate Proofs
LanguageEnglish
Year1939
DateMay 2, 1939
Kindstamp
Year1939
PlaceUnited States of America
ScottCanal Zone 125
Mediumpaper; ink (black) / engraving
Regionus
Npm Recordnpm_0.309126.296
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.
Image SourceSmithsonian Open Access
Image LicenseCC0
Oracle ID36595705

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Source credit: Smithsonian National Postal Museum