Paper is clean and firm, without discoloration.
Corners are sharp and square, without any evidence of rounding.
An uncirculated note will have its original natural sheen. A virtually perfect note, with some minor handling. May show evidence of bank counting folds at a corner or one light fold through the center, but not both. An AU note cannot be creased, a crease being a hard fold which has usually broken the surface of a note. Paper is clean and bright with original sheen.