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In the article entitled “Stamp Announcement 21-7: Chien-Shiung Wu,” in Postal Bulletin 22562 (12-31-20, page 50), the technical details table was unavailable for this stamp at the time of publication.
Here is the technical details table for the Chien-Shiung Wu stamp:
Issue:
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Chien-Shiung Wu Stamp
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Item Number:
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480200
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Denomination &
Type of Issue:
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First-Class Mail® Forever®
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Format:
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Pane of 20
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Series:
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N/A
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Issue Date & City:
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February 11, 2021, New York, NY 10199
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Art Director:
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Ethel Kessler, Bethesda, MD
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Designer:
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Ethel Kessler, Bethesda, MD
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Artist:
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Kam Mak, Brooklyn, NY
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Modeler:
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Joseph Sheeran
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Manufacturing Process:
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Offset, Microprint
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Printer:
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Ashton Potter (USA) Ltd. (APU)
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Press Type:
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Muller A76
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Stamps per Pane:
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20
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Print Quantity:
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18,000,000 stamps
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Paper Type:
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Nonphosphored Type III, Block Tag
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Adhesive Type:
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Pressure-sensitive
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Colors:
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Black, Cyan, Magenta, Yellow
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Stamp Orientation:
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Vertical
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Image Area (w x h):
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0.84 x 1.42 in./21.336 x 36.068 mm
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Overall Size (w x h):
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0.98 x 1.56 in./24.892 x 39.624 mm
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Full Pane Size (w x h):
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5.92 x 7.24 in./150.368 x 183.896 mm
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Press Sheet Size (w x h):
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11.84 x 21.72 in./ 300.736 x 551.688 mm
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Plate Size:
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240 stamps per revolution
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Plate Number:
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“P” followed by four (4) single digits in four corners
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Marginal Markings:
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Front:
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Plate number in 4 corners
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Back:
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©2020 USPS • USPS Logo • Two barcodes (480200) • Plate position diagram (6) • Promotional text
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— Stamp Services, Marketing, 1-14-21
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