Some info verified using a DCM scan (http://digitalcomicmuseum.com/).
On sale date from the publication date found at the Catalog of Copyright Entries, Part 2, Periodicals, New Series, Volume 35, 1940, Number 2. Second class permit. Copyright number 444832.
Same story as the first Black Bat prose tale in Black Book Detective vol 9#2 (July 1939).
Only appearance. Story was adapted from the story "Captain Future and the Space Emperor", written by Edmond Hamilton, which appeared in the first issue of Captain Future, dated Winter 1940. The pulp appeared about two months prior to the comic. Both pulp and comic were published by the same company.