Colorado State Quarters were released on June 14, 2006 as the thirty-eighth coin in the State Quarter series. Colorado’s original Statehood date was August 1, 1876.
The reverse design of the Colorado Quarter features the Rocky Mountains. The inscriptions include the State name, Statehood date, mintage date, “E Pluribus Unum,” and a banner reading “Colorful Colorado.” The coin’s reverse was designed and engraved by Norman Nemeth.
Colorado’s Rocky Mountains contain many of the natural wonders of the United States. The reverse design shows a sweeping view of the mountains with evergreen trees in the foreground.
The governor formed the Colorado Commemorative Quarter Advisory Commission. After reviewing more than 1,500 designs, five finalists were forwarded to the United States Mint. The governor selected “Colorful Colorado” as his design choice. The US Treasury Department gave final approval of the design. Other concepts considered for the Colorado Quarter included Mesa Verde, Pines Peak, and the 10th Mountain Division.
The Philadelphia mint produced 274,800,000 coins. The Denver mint produced 294,200,000 coins. The San Francisco Mint produced clad proof and 90% silver proof coins for inclusion in government issued proof sets.
Colorado Quarter Mintages
- 2006-P Colorado Quarter: 274,800,000
- 2006-D Colorado Quarter: 294,200,000
- 2006-S Proof Colorado Quarter: 2,882,428
- 2006-S Silver Proof Colorado Quarter: 1,585,008
Colorado Quarter Specifications
- Designers: William Cousins after John Flanagan (obverse), Norman Nemeth (reverse)
- Composition: 91.67% copper, 8.33% nickel (clad), 90% silver, 10% copper (silver proof)
- Diameter: 24.26 mm
- Weight: 5.67 grams
- Thickness: 1.75 mm
- Edge: Reeded