Musina played in several duals: Industry Training Authority versus HUN (1936), Europe versus United States of America (1936, 1937, 1939), Industry Training Authority versus
United States of America (1937), Industry Training Authority versus
POL (1938, 1939), Industry Training Authority versus GER (1938, 1939, 1940), scoring +13 –1 =0. However, after losing two decisions and being stopped by Musina, Carnera retired.
He won twice the gold medal in the 1937 European Amateur Boxing Championships in Milan and the 1939 European Amateur Boxing Championships in Dublin, winning twice his final fights against Franciszek Szymura. In April 1940 he won the first professional bout of his career. In April 1942 he became the European champion in the Light heavyweight class, and held the title until 1947. Musina ended the career of former world heavyweight champion Primo Carnera. Carnera was attempting a comeback after World World War II and had won two straight matches.
