The artwork shows the middleweight challengers: Ken Overlin, Glen Lee, Jock McAvoy, Fred Apostoli, Ben Brown, Al Hostak, Marcel Thil and Freddy Steele.

Ken Overlin (1910 – 1969) was an American middleweight boxer and world champion from 1940 to 1941. His record was 136 wins in 167 fights with 19 losses and 10 draws. Ken Overlin was inducted into the International Boxing Hall of Fame in 2015.

Glen Lee (1914 – 1994) was an American middleweight boxer and world champion from 1940 to 1941. His record was 53 wins in 78 fights with 20 losses and 5 draws.

Jock McAvoy (1908 – 1971) was a British middleweight and light heavyweight boxer. His record was 132 wins in 147 fights with 14 losses and 1 draw.

Fred Apostoli (1913 – 1973) was an American middleweight boxer and world champion from 1936 to 1937. His record was 61 wins in 72 fights with 10 losses and 1 draw. Fred Apostili was inducted into the International Boxing Hall of Fame in 2003.

Ben Brown (1918 – 1985) was an American middleweight boxer. His record was 68 wins in 92 fights with 18 losses and 6 draws.

Al Hostak (1916 – 2006) was an American middleweight boxer. Hostak held the middleweight world championship title twice between 1938 and 1940. His record was 64 wins in 84 fights with 9 losses and 11 draws.

Marcel Thil (1904 – 1968) was a French middleweight boxer and world champion from 1932 to 1937. His record was 106 wins in 136 fights with 20 losses and 10 draws. Marcel Thil was inducted into the International Boxing Hall of Fame in 2005.

Freddie Steele (1912 – 1984) was an American middleweight boxer and world champion from 1936 to 1938. His record was 123 wins in 140 fights with 5 losses and 11 draws. Freddie Steele was inducted into the International Boxing Hall of Fame in 1999.