I have what appears to be a painting named "The Collector" by Honore' Daumier. The inscription on the back is very old purchased from Catalda Fine Arts, Inc.
There are dozens of web sites for Daumier, listing the many lithographs known to be in circulation and providing biographical information. I suggest you Google. Lithographs are etchings, not paintings, and additional prints may be made after the artist's death.