Four frog stamps were issued by the United States Post Office in 2019.  They include the squirrel tree frog, northern leopard frog, American green tree frog, and Pacific chorus frog (formally known as Pacific tree frog).

These amphibians have been around for millions of years.  The oldest frog fossil ever found is known as Triadobatrachus and came from the Early Triassic Peeriod.  Surviving and adapting, this species has evolved into the frogs we know today.

Frogs are known to be an "indicator species."  This means when populations of frogs are prevalent in a certain area, the environment is healthy.  Scientists believe frogs are susceptible to a poor ecosystem because they breathe through their skin.  Furthermore, they spend their adolescent life in the water and their adult life on land, giving them dual exposure.

Frogs contribute to society in many ways.  One way is by keeping the insect population under control.  Frogs are also used for scientific research and pharmaceuticals in the medical field.  From the toxins of dart frogs to the enzymes taken from northern leopard frogs, these amphibians could radically change treatments for some of the world's most life-threatening diseases.
These Forever®stamps will always be equal in value to the current First-Class MailR one-ounce rate.

Made in the USA.

Product Specs：

Issue: Frogs Stamps
Item Number: 680100
Denomination & Type of Issue: First-Class Mail Forever
Format: Double-sided Booklet of 20, (4 designs)
Series: N/A
Issue Date & City: July 9, 2019, Boise, ID 83708
Art Director: William J. Gicker, Washington, DC
Designer: William J. Gicker, Washington, DC
Typographer: Greg Breeding, Charlottesville, VA
Artist: Nancy Stahl, New York, NY
Modeler: Sandra Lane/Michelle Finn
Manufacturing Process: Offset
Printer: Banknote Corporation of America
Press Type: Alprinta 74
Stamps per Booklet: 20
Print Quantity: 200,000,000
Paper Type: Phosphor Tagged Paper, Block Tagged
Adhesive Type: Pressure-sensitive
Processed at: Banknote Corporation of America
Stamp Orientation: Vertical
Image Area (w x h): 1.05 x 0.77 in./26.67 x 19.558 mm
Stamp Size (w x h): 1.19 x 0.91 in./30.226 x 23.114 mm
Full Booklet Size (w x h): 2.375 x 5.743 in./60.325 x 145.872 mm
Colors: Cyan, Magenta, Yellow, Black
Plate Size: 800 stamps per revolution

Shipping Information:

Shipping Method: USPS First Class & USPS Priority Mail.

Handling time: Usually around 2~3 business days.

Delivery time: Usually around 3-5 business days.

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