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Connie Mack Philadelphia Athletics Signed Hand Written Letter BAS A31890 Auto 10

$509

⭑⭑⭑⭑⭑ 4.8/5 Stars from Real Collectors

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All signatures sold on Pristine Marketplace are 100% guaranteed authentic, offering buyers complete confidence in every purchase.

Each autographed item undergoes rigorous verification through trusted authentication providers—including Beckett Authentication Services (BAS), James Spence Authentication (JSA), Fanatics Authentic, or Pristine Auction’s own in-house standard, Pristine Authentic.

This unwavering commitment to authenticity protects collectors and fans alike, making every signed piece not just a display item, but a trusted investment.

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Own a piece of baseball history with this Connie Mack signed, hand-written letter—a rare and valuable collectible for any sports memorabilia enthusiast. Connie Mack, the legendary manager of the Philadelphia Athletics and the winningest manager in MLB history, personally penned this letter, making it a unique addition to any collection. Authenticated by Beckett Authentication Services, this letter boasts an impeccable autograph grade of 10, ensuring its authenticity and quality.

  • Hand-written and signed by Connie Mack – A true collector’s item from the Hall of Fame legend.
  • Authenticated by Beckett – Includes Beckett hologram and Letter of Authenticity (LOA).
  • Autograph graded 10 – A pristine signature, perfect for display.
  • Ideal for baseball history collectors – An extraordinary relic from one of the most influential figures in the sport.

Whether you're a passionate baseball historian or searching for the perfect investment piece, this Connie Mack autographed letter is a must-have. Don’t miss your chance to own a signature from one of baseball’s greatest figures!