50 State Quarters to form what is known as a "mule". Only sixteen of these specimens, produced on dollar planchets, escaped from the mint. A 2005 Minnesota double die quarter, as well as a 2005 Minnesota quarter with extra trees (another die error), have both triggered numismatic interest. An unusual die break on some 2005 Kansas quarters created a humpback bison. Relatively more common are Kansas quarters bearing the motto "IN GOD WE RUST." The United States produces proof coinage in circulating base metal and, since 1992, in separately sold sets with the dimes, quarters, and half-dollars in silver. For the silver issues,
Provo Canyon Guard Quarters likely to be involved in any battles and was assigned a mere ten men to keep up the defenses. After the Utah War this fortification served as a station to observe Native American activity until the end of the Black Hawk Indian War in 1868, after which the Guard Quarters have served little purpose. The Provo Canyon Guard Quarters are built off of U.S. Route 189 a couple hundred feet above the canyon floor and on the north side of Provo Canyon. The elevation the Guard Quarters are built upon is about five thousand three hundred and thirty feet. Although