Gatja Helgart (G.H.) Rothe (1935-2007) Mezzotint titled Calalily, signed lower right, numbered 26/150. Professionally framed and double matted. Mezzotint by sight measures 18.5h x 12.5w G.H. Rothe was known as a master of mezzotinting, a technique used widely in the 17th, 18th, and early 19th centuries.