Superman #200 2003

Superman #200, published by DC in October 1967, presents the memorable "Super-Brother Against Super-Brother!" story. This bicentennial issue features an imaginary tale where Jor-El's other son, Knor-El, triumphs over Kal-El to become Superman. Originally a standalone narrative, it was later established as taking place on Earth-200 within the DC Multiverse, making it a unique piece of Silver Age continuity for collectors.