It's not exactly clear what you mean by "no sides" If you mean that the outer nickel-colored cladding is missing, leaving the inner copper core visible, that's called a lamination error and could be worth about $10.
A lamination-error coin should be quite a bit thinner and lighter than a normal quarter. If not, i.e. it's the same thickness and weight as a normal quarter, it's either been plated or exposed to a chemical that changed its color, and is only worth 25c.
If I didn't interpret your question correctly, please post a new one with more details.
That's the Nevada state quarter, part of the 50 State Quarter series. Nevada became a state in 1864, and the quarter was minted in 2006. It's worth exactly 25 cents.
A couple dollars at most. It's a regular quarter with gold plating.
A quarter from 2006 would still be worth 25 cents.
January 31, 2006
25 cents
About $2
1867 is the year Nebraska became a state. The Nebraska quarter was minted in 2006 and is worth exactly 25 cents.
Nevada, also known as "The Silver State" depicts the 2006 state quarter with a trio of wild mustangs. This quarter was the 36th one to be released in the United States 50 State Quarters.
The coin is worth 25 cents.
25 cents. It's the South Dakota state quarter, minted in 2006, and is only worth face value.
1889 is the year South Dakota officially became a state. The SD quarter was minted in 2006, and is worth 25 cents.
The 1889 quarter which has a buffalo on it is the NORTH Dakota quarter not South Dakota. The South Dakota 1889 quarter depicts Mount Rushmore. Both quarters were released in 2006. Unless they are proof they are worth 25 cents.