Arago: Echo I Communications For Peace Issue

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Echo I Communications For Peace Issue

4c Echo I Communications for Peace plate proof

Scott Catalogue USA: 1173
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.

Plate No.26845

Denomination: 4c

Subject: Radio Waves Connecting Echo I and Earth, Echo I - Communcations for Peace Issue

Color: deep violet

Date:
November 23, 1960
Medium:
paper; ink (deep violet) / engraving
Museum ID:
0.252182.133
Place:
UNITED STATES OF AMERICA

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