Several types of quarters carry more value than their face value of 25 cents, as of 2014, including Washington quarters minted earlier than 1964, particular state quarters — minted between 1998 and 2009 — that bear errors and quarters from the late 19th and early 20th centuries, according to About.com. The top value for a 20th century quarter, in 2014, is the Barber quarter valued at $49,000, states Coin Trackers.
Rarity and condition generally determine the value of coins to collectors. Washington quarters minted through 1964 contain 90 percent silver and 10 percent copper, so they also are sought after by collectors for their silver content. Silver Washington quarters carry values, as of June 2014, of between $3.50 and $3,000, states About.com, with uncirculated and errata coins carrying the highest values. After 1964, the U.S. quarter was minted of nickel and copper and had no silver content. Even so, certain quarters have extra value, including the 1976 Bicentennial quarter, and the 2005 Wisconsin State quarter. The Bicentennial quarter contains 40 percent silver and can be worth $3. The Wisconsin state quarter bearing an extra leaf on the ear of corn on its reverse, called either "extra leaf low" or "extra leaf high," can be worth up to $40.