With a flawless 49-0 (43Kos), Rocky Marciano left his mark as the only heavyweight champion in the history of boxing to go undefeated. These trunks, worn in an exhibition match (1958) in Sao Paulo are a testament to the devastating blows in the Brockton Blockbuster’s repertoire. Stains throughout the white trunks paint a vivid picture and tell the tale of a fight which occurred 2 years after his retirement. Adorned with an American and Brazilian flag patch on right leg and “Radio PRH9 Bandeirantes” sewn on left. Tagged with “Casa do Esportista R. Dr. Miguel Couto, 44 S. Paulo”. Sits in a marble-style frame (23.5x27.5”), mounted on red velvet. Plate in lower right corner of frame reads “Rocky Marciano Fight Worn Trunks 1958 Exhibition Match Sao Paulo, Brazil”. LOA from Marciano family member.