Denomination: Quarter
Value: 25 United States cents / 0.25 United States dollars
Obverse Image: George Washington
Obverse Designer: John Flanagan
Reverse Image: varies
Reverse Designer: varies
Diameter: 24.26 mm (0.955 inches)
Thickness: 1.75 mm
Edge: Reeded
Number of Reeds: 119
Coins per Role: 40
Value per Role: $10.00
Standard Coins
     Composition: 91.67% copper, 8.33% nickel
     Weight: 5.67 grams
     Manufactured in: Denver & Philadelphia (for circulation), San Francisco (for Proof Sets)
Silver Coins
     Composition: 90% silver, 10% copper
     Weight: 6.25 grams
     Manufactured in: San Francisco (for Proof Sets)
Timeframe: 1999-2008
Issue Rate: 5 designs per year
Approximate Manufacturing Time per Design: 10 weeks
Adults Collecting State Quarters: over 139,000,000 (Source- U.S. Mint 2002)
Total Designs in circulation: 100 (50 each from the Denver and Philadelphia Mints)
Authorizing Legislation: Public Law 105-124
Estimated Time Quarters Will Remain in Circulation: 30 years
Estimated Time Quarters Will Be Collected: Indefinitely

By the Numbers
Collecting US state quarters is probably the most affordable hobby one can get into. Don't be fooled into thinking you need an expensive case to house your collection - all you need is the quarters themselves and a love of US history. The total cost to collect every state's design is 50 times 25 cents, a mere $12.50. But it gets better: When you remember that the collecting period is spread out over ten years, the cost works out to a "monthly payment" of about 10.4 cents per month. Ten cents per month! Depending on your electric rate, it would probably cost you more money than that just to run a single 100 watt lightbulb for a half an hour per day.