SEAauthentics

Official account for Seattle Mariners authentic game-used & autographed memorabilia direct from T-Mobile Park. Visit us at Section 128 or Mariners Team Store.

[SEAauthentics @SEAauthentics]

Our latest auction featuring game used jerseys, caps, and balls from our Randy Johnson Number Retirement weekend closes tonight at 7pm! Place your bid at https://t.co/3F9dPglkVL to own a piece of Mariners history!

[SEAauthentics @SEAauthentics]

It's Steelheads Sunday! Make sure to check out our auction page at https://t.co/3F9dPglkVL for game used Steelheads jerseys from Cal Raleigh, Julio Rodriguez, Cole Young, and more! This auction ends next Sunday at 7pm.

[Seattle Mariners @Mariners]

Series finale on deck.

[SEAauthentics @SEAauthentics]

Our Opening Week auction closes at 7pm tonight! Bid on a range of items from 2025 and the first homestand of this season! Head over to https://t.co/3F9dPglkVL to view the listings and place a bid.

[SEAauthentics @SEAauthentics]

Take a closer look at one of our featured auction items, a dual-signed Topps Now card celebrating our 2025 division title clinch! This card is numbered 4/5 and features autographs by both Cal Raleigh and Julio Rodríguez

Visit https://t.co/3F9dPglkVL to view the listing and bid!

[SEAauthentics @SEAauthentics]

Only a few hours remain to bid on items from our historic 2025 season! Tonight's auction closes at 7pm, head over to https://t.co/3F9dPglkVL to place a bid.

[SEAauthentics @SEAauthentics]

Our latest auction is live now! Bid on a range of items from a set of Game Used autographed Cal Raleigh catcher's gear to jerseys and balls from the 2025 playoffs, and much more! Visit https://t.co/3F9dPglkVL to view the items and place your bid, this auction closes 3/29 at 7pm!

[SEAauthentics @SEAauthentics]

Throughout the season, we'll be using these special #Mariners50 on-field baseballs.
Secure your own game-used baseball now: https://t.co/NCM3F6GnsL

[Seattle Mariners @Mariners]

For the 50th time in franchise history, it’s #OpeningDay!

#Mariners50 x #TridentsUp

[SEAauthentics @SEAauthentics]

Our latest auction is live now! Bid on a range of items from a set of Game Used autographed Cal Raleigh catcher's gear to jerseys and balls from the 2025 playoffs, and much more! Visit https://t.co/3F9dPglkVL to view the items and place your bid, this auction closes 3/29 at 7pm!

[SEAauthentics @SEAauthentics]

This auction closes in just a few hours! Bid on these items as well as our autographed WBC caps at https://t.co/3F9dPglkVL!

[SEAauthentics @SEAauthentics]

Check out https://t.co/3F9dPglkVL which features Spring Training jerseys for Julio Rodriguez, Hisashi Iwakuma, Colt Emerson, Edgar Martinez and more! For more jerseys, request our inventory list by emailing [email protected]!

[SEAauthentics @SEAauthentics]

Check out https://t.co/3F9dPglkVL which features Spring Training jerseys for Julio Rodriguez, Hisashi Iwakuma, Colt Emerson, Edgar Martinez and more! For more jerseys, request our inventory list by emailing [email protected]!

[SEAauthentics @SEAauthentics]

Our Spring Training auction closes in less then two hours! Make sure to get your bid in at https://t.co/3F9dPglkVL before 7:00 tonight

[SEAauthentics @SEAauthentics]

Our Spring Training auction is live! Head over to https://t.co/3F9dPglkVL to bid on game used and team issued items from past Spring Trainings! Items include Spring Training jerseys, caps, nameplates and more. Auction closes this Sunday at 7pm.

[SEAauthentics @SEAauthentics]

Our Spring Training auction is live! Head over to https://t.co/3F9dPglkVL to bid on game used and team issued items from past Spring Trainings! Items include Spring Training jerseys, caps, nameplates and more. Auction closes this Sunday at 7pm.

[SEAauthentics @SEAauthentics]

Our latest auction is live on https://t.co/3F9dPglkVL now! This auction closes on 2/15 at 7pm and features a range of items from game used caps and bases to autographed cards and more!

[SEAauthentics @SEAauthentics]

This auction closes tonight at 7! Don't miss your chance to place your bid at https://t.co/cIvv1kGZt6

[SEAauthentics @SEAauthentics]

Our first auction of the year is live now! Various items from players signing at our upcoming FanFest including Cal Raleigh, Julio Rodriguez, George Kirby, and more are available. Head over to https://t.co/3F9dPglkVL by 2/1 at 7pm to place your bid!

[SEAauthentics @SEAauthentics]

Our first auction of the year is live now! Various items from players signing at our upcoming FanFest including Cal Raleigh, Julio Rodriguez, George Kirby, and more are available. Head over to https://t.co/3F9dPglkVL by 2/1 at 7pm to place your bid!

[SEAauthentics @SEAauthentics]

Listings close in just a few hours, head over to https://t.co/cIvv1kGZt6 to place your bid before 7:00 tonight!

[SEAauthentics @SEAauthentics]

Our latest auction includes the ball from one of Jorge Polanco's two ALDS home runs against Tarik Skubal plus the jersey from Cal's game-winning shot at home during Ichiro Number Retirement Weekend! These items and more are available at https://t.co/3F9dPgkN6d until Sunday at 7.

[SEAauthentics @SEAauthentics]

Our latest auction includes the ball from one of Jorge Polanco's two ALDS home runs against Tarik Skubal plus the jersey from Cal's game-winning shot at home during Ichiro Number Retirement Weekend! These items and more are available at https://t.co/3F9dPgkN6d until Sunday at 7.

[SEAauthentics @SEAauthentics]

This auction ends in just a few hours, don’t miss your chance to check out the listings and place a bid!

[SEAauthentics @SEAauthentics]

Our Playoff Auction is live! Head over to https://t.co/3F9dPglkVL to view listings including a home run ball, game used helmet, and jerseys from the ALDS! Auction ends 10/26 at 7pm.

[SEAauthentics @SEAauthentics]

Our Playoff Auction is live! Head over to https://t.co/3F9dPglkVL to view listings including a home run ball, game used helmet, and jerseys from the ALDS! Auction ends 10/26 at 7pm.

[SEAauthentics @SEAauthentics]

This week's auction is closing tonight at 7pm! Head over to https://t.co/3F9dPgkN6d to view the listings including playoff clinch items, home run balls, game used jerseys, an autographed pencil bat, and more!

[SEAauthentics @SEAauthentics]

Items from our postseason clinch last night, including Josh Naylor's game-winning RBI double are now listed at https://t.co/3F9dPglkVL!

[SEAauthentics @SEAauthentics]

Items from our postseason clinch last night, including Josh Naylor's game-winning RBI double are now listed at https://t.co/3F9dPglkVL!

[SEAauthentics @SEAauthentics]

Our latest auction includes a ball from Cal Raleigh's 44th home run, plus a pair of game used autographed Cal Raleigh shin guards and more from our friends @MarinersCare! Auction ends Sunday at 7pm, place your bid at https://t.co/3F9dPglkVL.