Many of the “majors” had a factory in which the “master” or headline figure might sketch out a painting, have it filled out by someone else, and then perhaps be

Many of the “majors” had a factory in which the “master” or headline figure might sketch out a painting, have it filled out by someone else, and then perhaps be finished off by the master. Sometimes multiple versions of the same painting were produced. The Vermeers and Van Goughs didn’t have all that infrastructure (and Vermeer painted little, or at least little survives)