Initial sales figures show the U.S. Mint has already sold 92,065 five-quarter clad proof sets in 2006. That number represents sales through Jan. 10. The sets, which cost $15.95, went on sale Jan. 5. They feature clad-composition proof quarters from Nevada, Nebraska, Colorado, North Dakota and South Dakota, and come in sealed cases inserted into printed boxes. To order, visit www. usmint.gov, or call (800) USA-MINT. Add $4.95 for shipping.