Michael Weiner, a Jewish figure deeply respected in the baseball community, served as the Executive Director of the Major League Baseball Players Association (MLBPA) from 2009 until his untimely passing in 2013. Known for his intelligence, integrity, and progressive leadership, Weiner played a pivotal role in labor relations, ensuring fair treatment and rights for players. His efforts in fostering a cooperative atmosphere between players and management have left a lasting impact on the sport. Collectors recognize Weiner’s signature as a testament to a leader who significantly influenced the modern era of baseball.