Issue: Tales of Suspense # 54
Writer: Stan Lee
Artist: Don Heck
Publication Date: June 1964
Iron Man's got a new mask. He's also got a healthy amount of angst, as he admits to himself that he has feelings for Pepper, and is nervous about the playful bickering between her and Happy Hogan.
Mandarin shows up for a rematch, and offers an alliance to Iron Man, provided that Iron Man serves him. Iron Man's not into it. Mandarin fights Stark with a sword before busting out one of his rings. This is a two-parter, so we'll have to wait a little bit to see how it turns out.
Mandarin brings the pain on Iron Man.
Next: Tales to Astonish # 56