Connie Mack Philadelphia Athletics Signed Hand Written Letter JSA LOA
Connie Mack Philadelphia Athletics Signed Hand Written Letter JSA LOA is backordered and will ship as soon as it is back in stock.
⭑⭑⭑⭑⭑ 4.8/5 Stars from Real Collectors
Free Shipping on U.S. Orders $99+
Free Shipping on U.S. Orders $99+
After payment is received, items will generally ship from Pristine Marketplace or our approved vendors within 2 business days.
Orders will ship via FedEx, UPS, or USPS for both domestic and international shipments.
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60-Day Risk-Free Returns
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100% Authenticity Guaranteed
100% Authenticity Guaranteed
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 rare piece of baseball history with this handwritten and signed letter by legendary baseball figure Connie Mack. Known as one of the most influential managers and team owners in Major League Baseball history, Connie Mack spent over 50 years with the Philadelphia Athletics, becoming a symbol of early American baseball. This authentic collectible is an extraordinary find for seasoned collectors and passionate fans alike.
Certified by one of the most trusted names in sports authentication, this historic item is more than just a signature—it's a direct connection to the golden age of baseball.
Product Highlights:
- Handwritten and signed letter by Connie Mack – a legendary figure in professional baseball history
- Authenticated by JSA (James Spence Authentication) – includes official JSA hologram and letter of authenticity
- A unique and historic addition to any baseball or vintage sports memorabilia collection
- Perfect for collectors of Hall of Fame legends and early 20th-century baseball artifacts

