Hi, You say that you know little about Art, so I want to explain Why several photos are Important. When you say "water painting", is it a Watercolor ( a kind of paint used) or a depiction of ocean, lake, river, etc.? It may be an Engraving or a Copy of one, like a lithograph, for one example, because a Painting would not have the Names with methods on it. Most likely, it is an Engraving, Copying an Original Painting. Photos should show one of Complete thing, as you found it; Close-ups of Signature/Initials, Dates, Company/Address, Special or Unclear parts of the Art work---on the Front/Obverse! On Back/Reverse,similar detail where there is any; one of the Strokes, if clear, and of the canvas, paper, board, etc. The Dimensions, too, please--Height, Width, with and w/o Frame. All I can think of now, but will help clear up some uncertainty, I hope. Good Luck! Factor