Superman Breaks Loose / Jor-El’s Golden Folly- #233 – Very Fine – 8.0 – Iconic cover art by Neal Adams – KEY ISSUE! A scientific experiment turns all the kryptonite on Earth to iron, as Clark Kent moves from newspaper to television journalism. Superman helps with a Kryptonite-powered generator test, but something goes wrong and there’s a massive explosion. But the explosion’s side effect transforms all Kryptonite on Earth into ordinary iron. Good news for Superman – but was there also a downside? I’m not a professional grader. Please review pictures for the quality. Grade variations and value via Overstreet Access (Comics). Any questions please send me a message.