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StampSource · si-npm
Experimental plate proof
Smithsonian National Postal Museum — Bureau Plate Proofs · US · English · 1939
Catalog record
| Line | US |
|---|---|
| Set / series | Smithsonian National Postal Museum — Bureau Plate Proofs |
| Language | English |
| Year | 1939 |
| Date | August 30, 1939 |
| Kind | stamp |
| Place | United States of America |
| Scott | USA |
| Medium | paper; ink (blue) / engraving |
| Region | us |
| Npm record | npm_0.309126.1262 |
| Description | Certified 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 ID | 36592951 |
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Other prints of Experimental plate proof in the catalog
Source credit: Smithsonian National Postal Museum