This is Amazing Stories for July 1943, cover by H.W. McCauley. The ISFDB entry for this issue is here and contains among other things the curious information that “[t]he ‘Correspondence Corner’ was discontinued for national security reasons.” I found this version of the cover in this bondage index. As is typical, Galactic Central has a clearer-but-smaller version of the same.

Update at 19:54 UCT. A commenter has asked whether we can see the back cover as well. As it turns out, we can, and here it is:

Wow! I got that by finding and downloading a the whole issue from the Internet Archive, something I encourage you to do to, if you want to read the stories behind the illustrations.