No such coin exists. There is a state quarter (or two, can't remember) which features a buffalo, I believe it is the Kansas one, but these coins are only worth face value because they are modern and commonly found in change. Chances are you are talking about the Buffalo nickel produced from 1913-1938 and values are very different depending on year, mintmark and condition.
The design only shows 3 legs on all the coins, it's face value.
How much is a three-legged Buffalo quarter worth
25 cents
Three legged buffalo
Please take a closer look. The coin's minting date is 2005 and is at the bottom edge under the buffalo.You're almost certainly thinking of the 3-legged buffalo nickel error that occurred in 1937. Your quarter is a modern State Quarter commemorating the year Kansas became a state. Unlike the nickel, the image of the buffalo intentionally shows only three legs; it's not an error.
1937
1935 has a reverse double die variety but no known 3-legged reverses.Only 1936d & 1937d coins have 3-legged types
1937-D is the 3-legged variety, a 3-1/2 legs variety was struck in 1936-D.
Three-legged buffalo nickels were made at the Denver mint in 1937. The error occurred when a Mint employee over-polished a die, accidentally removing part of the design. Many of the coins reached circulation before the error was discovered.
The three legged buffalo nickel in 1937
About $1200.Less for lower grade coins and more for higher grade coins.
Three legged stands are often called stools. In photography a three legged stand is called a tripod.
Three Legged Cross's population is 1,500.
One eyed three legged donkey
94 three legged cows and 25 chickens.