Superboy 3rd series comic books issue 19
"T-K-O!" Part 2 of 2. Guest-starring Valor (Mon-El). Story by Karl Kesel. Art by Tom Grummett and Doug Hazlewood. It's Round 2 for Superboy and Valor, but the red-headed amazon known as knockout wants to play too. But when Valor collapses from an unknown ailment can Superboy find a way to save him before it's too late. And what does the Negative Zone have to do with it. Cover price $1.95.