What does a lamination error on a quarter look like?

The following description is from www.coinsite.com:

Lamination Error: A coin with a fragment of metal missing or peeled off the coin's surface. Caused by dirt or gas trapped in the strip as it is rolled out to the prescribed thickness. Lamination errors may be missing or attached to the coin's surface. In the case of clad coins, the outer layer may be completely or partially missing on one or both sides.