Free Shipping on U.S. Orders $99+!

Shop the Top Deals of the Week Shop Now

1977 Seattle Mariners Team Signed Autographed Official MacPhail AL Baseball Inaugural Year With 26 Signatures JSA #XX97490

$899

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

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.

60-Day Risk-Free Returns

Shop with total confidence. If you're not completely satisfied, return your item within 60 days for a full refund—no questions asked. Your satisfaction is 100% 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.

Learn more

Fast & Secure Checkout

  • Amazon
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Venmo
  • Visa

This Official MacPhail AL Baseball is a rare collector’s item, hand-signed by 26 members of the 1977 Seattle Mariners Team—the franchise’s inaugural MLB season. With signatures from legendary players and coaches, this baseball is a must-have for Mariners fans and serious memorabilia collectors.

  • Signatures include: L. Cox, C. Lopez, J. Montague, J. Burke, E. Romo, D. Pole, D. Johnson, J. Baez, D. Segui, C. Reynolds, B. Stinson, G. Wheelock, & V. Pinson.
  • Authenticity Guaranteed: Certified by JSA (James Spence Authentication) and includes a tamper-proof hologram and matching full-page certificate of authenticity.
  • Condition: The baseball shows toning as seen in the images, adding to its vintage character.
  • A Piece of Mariners History: The 1977 season marked the Seattle Mariners' debut in Major League Baseball, making this autographed baseball a significant piece of the team's legacy.
Whether you're a lifelong Mariners fan, a baseball history enthusiast, or a sports memorabilia collector, this signed baseball is a unique and valuable addition to any collection. Secure this historic item today!