How much is a quarter worth with one side copper from Vermont year is 2001?

You have what's called a lamination error. Sometimes the outer cladding on a quarter, nickel, or dime does not stay bonded to the copper core, a bit like taking one side off an Oreo cookie. The cladding can come off before or after the coin is struck. Lamination errors among state quarters are popular and retail in the $10 to $15 range.