Comet (prozine)
(Did you mean a fanzine?)
Pulp SF magazine published from December, 1940 to July, 1941, for a total run of five issues.
The editor was F. Orlin Tremaine; publisher was H-K Publications, New York. It was sub-titled "Stories of Time and Space."
http://www.sf-encyclopedia.com/entry/comet (IA) SF Encyclopedia entry
page revision: 2, last edited: 23 Jan 2019 21:53