Copyright 1943 by Comic Magazines. The on-sale date is from the publication date recorded in the Catalog of Copyright Entries, Part 2, Periodicals, 1943, New Series, Vol. 38, No. 4.
This is Leav. He draws large hands, many lively faces, some panels without backgrounds, and a special way of running with high lifted legs. Compare with his signed story in Wanted Comics #52.