Home comic book Superman #140 View cart “Action Comics #245” has been added to your cart. 🔍 Superman #140 Grade 6.0 $100.00 CAD In stock Superman #140 quantity Add to cart SKU: ITM719092 Categories: comic book, raw Tags: first appearance, silver age (1956-69), superhero Description Additional information First appearance of blue kryptonite. Grade 6.0 Related products Action Comics #262 $20.00 CAD Add to cart Action Comics #268 $20.00 CAD Add to cart Journey Into Mystery #117 $70.00 CAD Add to cart Journey Into Mystery #120 $55.00 CAD Add to cart