The Gil Kane Punch of the Week 6

The Silver Age Atom punches his Golden Age counterpart clear out of his comic, from The Atom 36 (image courtesy of The Grand Comics Database).

By the way, here are a couple of links to some Gil-Kane-punching-related sites:

First, while this gallery of punches appears on a blog that is in Spanish, it speaks the international language of punching.

Second, a nice analysis by Strange Ink of a great Gil Kane punch from Justice League of America 200.