This was a full issue reprint of the 1963 book where Iron Man was introduced. Kirby just did the cover, with Heck inks. Kirby is sometimes credited with doing more on the issue (plotting the Iron Man story, doing layouts for the art) but that doesn’t seem to be the case. Nice cover, anyway, Always thought it was interesting that Spider-Man was part of the hype on the cover, given that his first issue just came out that same month.
The Iron Man stuff in there has been reprinted in a lot of other places, of course, but this is still worth picking up for the less common Colan and Ditko stories included.