There are many different types of 19th century (or earlier) antique prints. They can generally be divided into two classes: those made from metal printing plates and those made from stones. From metal plates we get engravings, etchings, aquatint, and mezzotints. Most of these will show a tell-tale indentation in the paper corresponding to the outline of the plate. From stones we get lithographs. All fo these may be finished by hand with watercolor.