Likely dating to the late 1920's, though possibly very early 1930's (pre-code era, a mix of silent and early talkie stars), these are 3-3/8" X 4-1/2" photo cards issued in four 24 card boxed sets by Kashin Publications out of New York. Kashin Motion Picture Stars with facsimile (fake) autograph on front. Blank back. ACC designation W618.
Please see my massive 5-page Photo ID Guide featuirng images of all of the W618 Kashin Motion Picture Stars Movie Cards.
And if you have some time to spare, about 8-1/2 minutes to be more precise, here's a video I did featuring the Kashin Motion Picture Stars cards:
