Coin Highlights
- Year: 2010
- Mint Mark: S (San Francisco)
- Grade: Gem Proof
- Composition: 90% Silver, 10% Copper
- Weight: 6.25 grams
- Actual Silver Weight: 0.1808 troy oz
- Diameter: 24.3 mm
- Edge: Reeded
- Mintage: 859,417
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 Silver Proof Quarter was issued only in the 2010 America the Beautiful Quarters Silver Proof Set and the 2010 U.S. Mint Silver Proof Set. With a mintage of 859,417, it is one of the lower-mintage silver proof quarters in the America the Beautiful series and is highly sought after by collectors assembling complete silver proof quarter sets.






