Iron Man gives his fans crappy souvenirs.
Panel from Tales of Suspense #41 (May 1963), plot by Stan Lee, script by Robert Bernstein, pencils by Jack Kirby, inks by Dick Ayers, letters by Marty Epp
A couple months later in 1963, a piece of that cannonball was melted down and made into bullets, one of which killed John F. Kennedy. How does that make you feel about Iron Man now?!?