Updated May 29th:

Issue: Total Eclipse of the Sun Stamp
Item Number: 475300
Denomination & Type of Issue: First-Class Mail Forever®
Format: Pane of 16 (1 design)
Series: N/A
Issue Date & City: June 20, 2017, Laramie, WY 82072
Designer: Antonio Alcalá, Alexandria, VA
Art Director: Antonio Alcalá, Alexandria, VA
Typographer: Antonio Alcalá, Alexandria, VA
Existing Photos: Fred Espenak
Modeler: Sandra Lane/Michelle Finn
Manufacturing Process: Offset, Microprint
Printer: Banknote Corporation of America
Printed at: Browns Summit, NC
Press Type: Alprinta 74, ABG Digicon Series 2
Stamps per Pane: 16
Print Quantity: 60 million stamps
Paper Type: Phosphor Tagged Paper, Overall
Adhesive Type: Pressure-sensitive
Processed at: Banknote Corporation of America, Browns Summit NC
Colors: Cyan, Magenta, Yellow, Black, Thermochromic/Black
Stamp Orientation: Vertical
Image Area (w x h): 1.085 x 1.085 in./27.56 x 27.56 mm
Overall Size (w x h): 1.225 x 1.225 in./31.12 x 31.12 mm
Full Pane Size (w x h): 6.00 x 6.00 in./152.40 x 152.40 mm
Press Sheets Size (w x h): 12.00 x 24.50 in./304.8 x 622.30 mm
Plate Size: 128 stamps per revolution
Plate Numbers: “B” followed by five (5) single digits
Marginal Markings:
Front: Plate numbers in two corners of pane
Back: © 2017 USPS • USPS logo • Plate position diagram • Barcode (475300) in upper right and lower left corners of pane • 1 map, “Track of the Total Solar Eclipse Across the United States, August 21, 2017” • Promotional text
Updated May 12th:
On June 20, 2017, in Laramie, WY, the U.S. Postal Service® will issue the Total Eclipse of the Sun stamp (Forever® priced at 49 cents), in one design, in a pressure-sensitive adhesive (PSA) pane of 16 stamps (Item 475300). The $7.84 Total Eclipse of the Sun pane of 16 stamps may not be split, and the stamps may not be sold individually. The stamps will go on sale nationwide June 20, 2017.
On August 21, 2017, a total solar eclipse will be visible to millions of Americans as it sweeps a narrow path across parts of the entire country. The U.S. Postal Service anticipates this rare event with a stamp celebrating the majesty of total solar eclipses. A total eclipse of the Sun occurs when the Moon completely blocks the visible solar disk from view, casting a shadow on the Earth. The image on the Total Eclipse of the Sun stamp shows a total solar eclipse that was seen over Jalu, Libya, in 2006.
The Total Eclipse of the Sun stamp is the first U.S. stamp to use thermochromic ink, which reacts to the heat of your touch. Placing your finger over the black disc on the stamp causes the ink to change from black to clear to reveal an underlying image of the moon. The image reverts back to the black disc once it cools. The back of the stamp pane shows a map of the eclipse path. Art director Antonio Alcalá designed the stamp with existing photographs taken by astrophysicist Fred Espenak.
Stamp Fulfillment Services will make an automatic push distribution to Post Offices™ of a quantity to cover approximately 30 days of sales.
Special Dedication Postmarks:
Only the following pictorial postmark is permitted for the Total Eclipse of the Sun stamp. The word “Station” or the abbreviation “STA” is required somewhere in the design, because it will be a temporary station.
How to Order the First-Day-of-Issue Postmark:
Customers have 60 days to obtain the first-day-of-issue postmark by mail. They may purchase new stamps at their local Post Office, at The Postal Store® website at usps.com/shop, or by calling 800-782-6724. They must affix the stamps to envelopes of their choice, address the envelopes (to themselves or others), and place them in a larger envelope addressed to:
FDOI – Total Eclipse of the Sun Stamp
USPS Stamp Fulfillment Services
8300 NE Underground Drive, Suite 300
Kansas City, MO 64144-9900
After applying the first-day-of-issue postmark, the Postal Service™ will return the envelopes through the mail. There is no charge for the postmark up to a quantity of 50. There is a 5-cent charge for each additional postmark over 50. All orders must be postmarked by August 20, 2017.
Philatelic products for this stamp issue are as follows:
- 475306 Press Sheet with Die-cut, $62.72
- 475310 Digital Color Postmark Keepsake, $9.95
- 475316 First-Day Cover, $0.93
- 475321 Digital Color Postmark, $1.64
- 475329, Protective Sleeve, $0.25
- 475330 Ceremony Program, $6.95
- 475333 American Commemorative Collectible Panel, $10.95
Technical Specifications are not yet available.
April 27th:
According to a USPS spokesman, this “cool” “first of its kind” issue is a “Forever Stamp that turns into TWO images from the heat of your finger!” The stamp will be issued June 20
[press release]
Total Eclipse of the Sun to be commemorated on a Forever Stamp
One Stamp: Two Images 
WASHINGTON — The Postal Service will soon release [June 20] a first-of-its-kind stamp that changes when you touch it. The Total Solar Eclipse Forever stamp, which commemorates the August 21 eclipse, transforms into an image of the Moon from the heat of a finger. The public is asked to share the news on social media using the hashtag #EclipseStamps.
Tens of millions of people in the United States hope to view this rare event, which has not been seen on the U.S. mainland since 1979. The eclipse will travel a narrow path across the entire country for the first time since 1918. The path will run west to east from Oregon to South Carolina and will include portions of 14 states.
The June 20, 1:30 p.m. MT First-Day-of-Issue ceremony will take place at the Art Museum of the University of Wyoming (UW) in Laramie. The University is celebrating the summer solstice on June 20. Prior to the event, visitors are encouraged to arrive at 11:30 a.m. to witness a unique architectural feature where a single beam of sunlight shines on a silver dollar embedded in the floor, which occurs at noon on the summer solstice in the UW Art Museum’s Rotunda Gallery.
The back of the stamp pane provides a map of the August 21 eclipse path and times it may appear in some locations. Visit NASA’s website to view detailed maps of the eclipse’s path.
Thermochromic Ink
The stamp image is a photograph taken by astrophysicist Fred Espenak, aka Mr. Eclipse, of Portal, AZ, that shows a total solar eclipse seen from Jalu, Libya, on March 29, 2006.
In the first U.S. stamp application of thermochromic ink, the Total Solar Eclipse stamps will reveal a second image. Using the body heat of your thumb or fingers and rubbing the eclipse image will reveal an underlying image of the Moon (Espenak also took the photograph of the Full Moon). The image reverts back to the eclipse once it cools.
Thermochromic inks are vulnerable to UV light and should be kept out of direct sunlight as much as possible to preserve this special effect. To help ensure longevity, the Postal Service will be offering a special envelope to hold and protect the stamp pane for a nominal fee.
A total eclipse of the Sun occurs when the Moon completely blocks the visible solar disk from view, casting a shadow on Earth. The 70-mile-wide shadow path of the eclipse, known as the “path of totality,” will traverse the country diagonally, appearing first in Oregon (mid-morning local time) and exiting some 2,500 miles east and 90 minutes later off the coast of South Carolina (mid-afternoon local time).
A total solar eclipse provides us with the only chance to see the Sun’s corona — its extended outer atmosphere — without specialized instruments. During the total phase of an eclipse the corona appears as a gossamer white halo around the black disk of the Moon, resembling the petals of a flower reaching out into space.
Art director Antonio Alcalá of Alexandria, VA, designed the stamp.
The Total Eclipse of the Sun stamp is being issued as a Forever stamp, which is always equal in value to the current First-Class Mail 1-ounce price.
The Postal Service receives no tax dollars for operating expenses and relies on the sale of postage, products and services to fund its operations.