Ernest Schuessler did about 40-50 of such pieces for a theatre in the Chicago-Milwaukee area
they lined a long hallway to the theatre area
in the 1970s a flea market dealer bought them when the theatre was renovating & sold them.
Collectors saw the guy and bought lots.
I got 3 (Gable, Harlow) from a friend who had them in his comics & posters Saloon that was next to his comic shop (get drunk, buy comics)
about 22x28 or so, each is painted in oils over an oversized photograph mounted to a canvas
the damn photos would probably be worth 3-10k each today