Here are five of the most famous baseball cards of all time:

1. 1909-1911 T206 Honus Wagner: This card features Pittsburgh Pirates shortstop Honus Wagner and is widely considered one of the most valuable baseball cards in existence.

2. 1952 Topps Mickey Mantle: This card features New York Yankees center fielder Mickey Mantle and is one of the most iconic baseball cards of the 20th century.

3. 1986 Fleer Michael Jordan: This card features basketball legend Michael Jordan, who briefly played baseball during his professional career, and is one of the most sought-after cards in the history of the sport.

4. 1951 Bowman Willie Mays: This card features San Francisco Giants center fielder Willie Mays, one of the greatest players of all time, and is a highly prized collectible among fans of the sport.

5. 1914 Cracker Jack Shoeless Joe Jackson: This card features Cleveland Naps outfielder Shoeless Joe Jackson, one of the greatest hitters of his era, and is one of the most valuable pre-World War I baseball cards in existence.

Note: The value and popularity of baseball cards can vary greatly depending on several factors, including rarity, condition, and historical significance, and this list is not exhaustive.