Coin Highlights
- Year: 2010
- Mint Mark: S (San Francisco)
- Grade: Gem Proof
- Composition: Copper-Nickel Clad
- Weight: 5.67 grams
- Diameter: 24.3 mm
- Edge: Reeded
- Mintage: 1,163,952
Design
Obverse:
John Flanagan’s classic portrait of George Washington, refined by William Cousins, with the inscriptions “UNITED STATES OF AMERICA,” “LIBERTY,” “IN GOD WE TRUST,” and “QUARTER DOLLAR.”
Reverse:
A mature American bison stands prominently in the foreground while Old Faithful erupts in the distance, with the Yellowstone Mountains forming the backdrop. The design includes the inscriptions “YELLOWSTONE,” “WYOMING,” “2010,” and “E PLURIBUS UNUM,” celebrating the park’s abundant wildlife and geothermal wonders.
Collectibility
The 2010-S Yellowstone National Park Proof Quarter was issued only in the 2010 America the Beautiful Quarters Proof Set and the 2010 U.S. Mint Proof Set. It was never released into circulation. With a mintage of 1,163,952, it is an important issue from the first year of the America the Beautiful Quarters series and is a popular addition to complete clad proof quarter collections.



