Prints are broken down into two sections...

Limited Edition Prints which are signed and numbered by the artist.  These prints are only reproduced in a limited sizes ad lot numbers normally 100 or less with no more being produced after they reach their limit.  This makes these prints more valuable over time.

Unlimited Prints:  Which are not signed or numbered and available in lots of 1000 or more.  These are original works of art by the artist but were specifically  produced for the purposes of sales in various sizes and forms.