Walkouts premium collection
Walkouts premium collection
Not for sale today. Private offers considered.
Beckett graded 8 of 10 on this Mathis Albert Borussia Dortmund 2025-26 signed shirt, independently verifiable through Beckett Authentication Services. This is Albert's first Beckett certification, the first record of his signature in Beckett's database. The signature sits on the back, beside the number.
This is the Fanshop Match specification of Borussia Dortmund's 2025-26 home kit, made by Puma in the club's traditional yellow and black, size L. The shirt is in excellent condition with its original tags still attached. A Fanshop Match shirt is made to the same specification as the shirt worn on the pitch, without being worn in any competitive match itself.
This authentication carries certificate AG004071 from Beckett, documented with a certificate of authenticity, a letter of authentication, and a grade of 8 out of 10. The shirt also carries a One Beckett Medallion hologram sticker, tying that certificate directly to this exact item, evidence a collector can check independently through Beckett's own database rather than take Walkouts' word for it.
Walkouts recorded this signature at Manchester Airport, Manchester, England, on 17 March 2026, with Albert photographed signing the yellow shirt, its number 41 visible in the frame. The Walkouts proof code 26MAB20031841 ties this documentation to this exact item, independently verifiable at any time, the same record a collector can hold up against the shirt itself to confirm it firsthand.
Albert carries a marker of a wider stage: selection in Dortmund's 2025 FIFA Club World Cup squad, where at 16 years and 27 days he was the tournament's youngest player. Born on 21 May 2009, he plays as a winger, a naturally right-footed wide attacker. A signed shirt from this 2025-26 home season is an early stake in that story, held before the rest of it is written.
You receive the signed shirt, exact video proof of signing, sent unwatermarked after purchase, a certificate of authenticity, and a letter of authentication.
We hand you proof you can check without us. Authentication from the names collectors already trust, our own signing proof captured the moment the marker touched the shirt, and the full chain behind both, so your certainty rests on evidence you hold yourself. We've bought fakes. We know that feeling, and we built Walkouts so you never have to.
View the signing verification here: 26MAB20031841
Certificate number: AG004071
Grade: 8 - Signatures: 1 - Signer: Albert, Mathis - Item: Jersey
View the certification here: AG004071