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- Experimental for John Singleton Copley Painting plate proof
Experimental for John Singleton Copley Painting plate proof
- 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.
- Plate No.168762
- Data Source
- National Postal Museum
- May 6, 1965
- Object number
- Bureau of Engraving and Printing
- Bureau Plate Proofs
- United States of America
- See more items in
- National Postal Museum Collection
- Scott Catalogue USA 1273
- Record ID
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