With original prints, the original artwork IS THE PRINT ITSELF.
The image may have been created in a variety of ways, by being etched into a plate, or drawn onto a lithographic stone, or engraved out of a block of wood for example. The finished work is only created by inking up and taking an impression from this plate, stone or block. The work does not exist in any other form.
There may be a small number of this same image produced, always in a limited edition, which is denoted by the number often written on the front of the work showing what number in the edition that impression is, with the full number of the edition produced underneath this top number. Imperfections and inconsistencies between the prints in the edition are a result of the artist's hand individually creating each work.