The May 1953 cover of Startling Stories by Walter Popp might not be the most distinguished entry in the pulp cover canon, even in the somewhat-improved quality available at via the Internet Speculative Fiction Database:
The issue is well worth attention, though, thanks to two outstanding examples of Virgil Finlay’s work, illustrating Fletcher Pratt’s story “The Conditioned Captain.” First here:
And then here:
This issue is available to read and download at the Internet Archive.
The author Fletcher Pratt was also remarkable. Besides SF and fantasy, we wrote a number of popular books of naval history and the American Civil War. On the latter topic his work “Ordeal by Fire” was a bestseller.
https://en.m.wikipedia.org/wiki/Fletcher_Pratt
Looks like Pepper Potts grandmother hanging out with Tony Stark’s grandfather, testing an early power armor design.