1949-50 Toleteros of Eugene ("Gene") Baker.

After playing for the Kansas City Monarchs in the Negro Leagues, Baker made his MLB debut for the Cubs just 3 days after Ernie Banks broke the color barrier for the team. He was an MLB all star in 1955. Baker is the answer to a trivia question most baseball fans would get wrong.

When asked, "Who was the first African American manager in the National or American League?" most fans would answer, "Frank Robinson." This is incorrect. The correct answer is Gene Baker, who took over as manager of the Pirates for the final two innings on September 21st, 1963 when Danny Murtaugh was ejected. Baker had also been the second African American coach in the Majors, behind Buck O'Neil.

This example is well-centered with minor surface loss on the reverse, likely due to removal from an album. 

The second Toleteros set in ‘49-50 expanded to 216 cards and retained the game-card concept. Measuring about 1¼" x 2¼", the cards feature black-and-white portrait photography with player names below the image. They were distributed in Puerto Rico and included numerous Negro League and Major League stars.