Well, if DaVinci could do it . . .

On occasion, someone will say something like, “I don’t buy photography because I only buy originals.  There can be multiple copies of a photograph. ”

Point taken. I do want to point out that “the masters” were not above reproducing successful works. They were, after all, business people as well as artists.

http://arthistoryblogger.blogspot.com/2012/06/multiple-versions-of-same-painting.html?m=1