Click on the above scans for a larger image. Data is still tentative.

39¢ Holiday Snowflakes
(Sennett Security Products)
Flat Double Sided Convertible Booklet of 20 (4 designs)
Scott # 4108a Block of 4
Scott # 4108b Booklet of 20 with plate # S1111
Series USPS - Holiday ~ PNC3 - Holiday
Issue Date & City October 5, 2006, New York, NY 10199 (Mega Stamp Show)

Nationwide Sale October 6, 2006
Designer Richard Sheaff, Scottsdale, AZ
Art Director Richard Sheaff, Scottsdale, AZ
Typographer Richard Sheaff, Scottsdale, AZ
Photographer Kenneth Libbrecht, Pasadena, CA
Engraver N/A
Modeler Donald H. Woo
To Press / Initial Quantity Summer 2006 / 1,515,000,000 stamps
Booklet Size 20
Printer Banknote Corporation of America, Inc. /SSP
Press Goebel, Optiforma 26
Process Offset
Where Printed Browns Summit, NC
Where Processed Unique Binders, Fredericksburg VA
Plate Size & Interval 960 stamps per revolution
Paper Type Prephosphored, USPS Type I
Adhesive Type Pressure Sensitive
Tagging Type Prephosphored, Mottled Tagging
Die Cut Gauge 11.3 x 11.6 (Valley/Peak) on 2 or 3 sides
Colors Blue, Red (PMS-710), Green (PMS-7482), Black)
Image Size (w x h) 0.710 x 0.820 in. / 18.03 x 20.83 mm
Overall Size (w x h) 0.870 x 0.984 in. / 22.10 x 24.99 mm
Booklet Size (w x h) 5.53 x 1.20 in. / 140.46 x 30.48 mm
Margin Markings Stamp Side: © 2005 USPS · Plate numbers
Cover Side: "Snowflakes" • "Four Different Designs" • "Twenty 39 cent Self-adhesive Stamps" •  Price "$7.80" • Barcode "675600"
Earliest Known Use October 5, 2006
USPS Order Numbers 675640 Convertible Booklet of 20 - $7.80
675663 First Day Cover - Set of 4 - $3.08
Availability Most Post Offices Nationwide
Official Announcement The Postal Service Holiday Snowflakes special stamps in four designs, on October 5, 2006, in New York, New York (Mega Stamp Show). The stamps, designed by Richard Sheaff of Scottsdale, Arizona, go on sale nationwide October 6, 2006.

In celebration of the winter holiday season, the Postal Service will produce these four stamps featuring photographs of snowflakes. The stamps are photographs of two basic snowflake patterns by physicist Kenneth Libbrecht of Pasadena, California. The patterns are stellar dendrites, which form branching treelike arms and sectored plates, which form platelike arms.

Because fallen snowflakes start to melt and lose their shape in mere minutes, Libbrecht quickly transferred the snowflakes from cardboard to a glass slide using a paintbrush. He then snapped the photos inside a temperature-regulated enclosure using a digital camera attached to a high-resolution microscope.

The stamps will be issued in a pressure-sensitive adhesive (PSA) pane of 20 stamps (Item 568600), a double- sided booklet of 20 stamps (Item 675600), a folded vending booklet of 20 stamps (Item 675500), and an ATM sheetlet of 18 stamps (Item 569400).

Press Release Click here for the press release.
End Card Black Ink on Cream Card.  Click here for a scan
Note Individual Scott numbers are:
• 4105 - thin pointed arms
• 4106 - leafy arms
• 4107 - large center
• 4108 - wide pointed arms
  4108a - block of 4, #4105-4108
  4108b - Double sided pane of 20

Philatelic Products

There are two philatelic products available for this stamp issue:

• Item 568663, First Day Cover (Set of 4 from pane) - $3.08.

• Item 568693, Cancellation Keepsake (Pane w/4 FDC) - $10.88.

Distribution: Item 675600, $7.80 Holiday Snowflakes, PSA Double-Sided Booklet of 20

SDOs will receive approximately their full standard automatic distribution quantity for a PSA booklet. Distributions are rounded up to the nearest master carton size (4,000 booklets).

Initial Supply to Post Offices

SDOs will make a subsequent automatic distribution to Post Offices for their full standard automatic distribution quantity for a PSA booklet using PS Form 17, Stamp Requisition/Stamp Return. SDOs must not distribute stamps to Post Offices before September 29, 2006

Philatelic Requirement

SDOs will not receive a separate quantity Item 675600 for their authorized philatelic centers. Philatelic centers must be supplied their quantities from the initial automatic distribution made to SDOs.

Additional Supply

Post Offices requiring additional booklets must requisition Item 675600 from their designated SDO using PS Form 17. SDOs requiring additional stamps must order them from the appropriate accountable paper depository (APD) using PS Form 17.

For fulfilling supplemental orders from SDOs, the San Francisco, Chicago, Memphis, and New York APDs will each receive 1,500,000 additional booklets; and the Denver APD will receive 456,000 additional booklets.

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