Just like coins, condition plays an important role in value. Generally, the higher the state of preservation, which we call grade, the more the notes are worth. CU or Crisp Uncirculated notes are ones in new condition with no folds or tears and with four sharp corners. Notes with just one light fold or several corner folds are considered About Uncirculated or AU. Notes with a few light folds but still crisp with bright colors are considered Extra Fine or XF. Notes with evidence of circulation and several folds with little crispness remaining are Very Fine or VF. If the note as rough edges, well circulated and hardly any crispness remaining it is graded as Fine. If the note is significantly worn and soiled with roughness around the edges it would grade Very Good or VG.