1951 Topps Ringside #42, Tiger Flowers 🥊 Boxing Pioneer
Tiger Flowers was the first African-American world middleweight champion (1926). He died one year later, 1927, so boxing cards of Tiger Flowers are very scarce.
This card is part of Topps’ debut boxing release.
This set sits at a crossroads for Topps because it incorporates pre-modern card design along with post-war printing improvements. This set was released just before Topps' 1952 Baseball set, which revolutionized card collecting.

1920s Exhibits Harry Wills 🥊 Boxing Hall of Famer
This card is over 100 years-old showing Boxing Pioneer Harry Will hitting the heavy bag.
They just aren't making any nostalgic cards with photography like this nowadays.
In the 1910s–1920s, Harry Wills was widely considered as the most deserving challenger to heavyweight champion Jack Dempsey.
He was the No. 1 Heavyweight boxing contender for years (regardless of race), beat nearly every top Black heavyweight of his era, and defeated many white contenders as well—yet he was systematically denied a title fight.

1925 Exhibits, Harry Greb 🥊Middleweight World Champion
Good luck trying to find a presentable copy of this extremely scarce card of World Middleweight Champion, Harry Greb.
Harry Greb separates himself from nearly every other boxer in the quality and quantity of his opposition. He fought Hall of Famers and world champions repeatedly, including Gene Tunney, whom Greb famously defeated (and is widely regarded as the only man to beat Tunney at his best). The fact that he fought most of his fights blind in one eye only adds to his legacy.
In historical terms, Harry Greb is often called the greatest middleweight—or even the greatest pound-for-pound fighter of all time.
The fact that he fought in the pre-television era makes him a benchmark for true boxing greatness.