A collector of film star cards has confirmed the "Screen Star Subjects" set with "rounded corners" comes in both the 1st printing boxes (with a clear "W.S. / N.Y." printed on back) and the 2nd printing boxes (with the "W.S. / N.Y. obliterated). It appears the "Sport Star Subjects" with "rounded corners" may be in similar 1st and 2nd printing boxes.
This set is listed in Post 283 above as "4. Set of 48 issued in four boxes of 12 (Series 1-4) labeled “Screen Star Subjects,” single sided, printed on white cardstock with “rounded” corners."
Original work Copyright 2020, by Michael Fired, P.O. Box 27521, Oakland, California 94602-0521. No claim to the original work of others.