Mathis Albert 41 Borussia Dortmund 2025-2026 Signed Football Shirt
Product details
Proof details 4
Beckett graded this signature 8 out of 10, the first Beckett-certified example of Mathis Albert's autograph. It sits on his Borussia Dortmund 2025-2026 Fanshop Match home shirt, size L, on the back, beside the number, signed on 17 March 2026 at Manchester Airport, Manchester, England.
The shirt
This Borussia Dortmund 2025-2026 home shirt is made by Puma in the club's yellow and black colourway, the same quality as worn on the pitch, with the original tags still attached. This is an original fanshop shirt from the 2025-2026 season itself, produced at the time rather than reissued since, and the item is in excellent condition throughout, exactly as it left Dortmund's own retail line.
Authentication by Beckett
Beckett issued certificate AG004063 for this signature, 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, sealing the signature to that specific certificate. Between the certificate number, the letter, and the hologram, a collector can check every part of this authentication directly against Beckett's own published record.
The signing
Walkouts recorded this signing itself, separately from Beckett's own certificate: proof code 26MAB20031741 ties the shirt to a session at Manchester Airport, Manchester, England, on 17 March 2026. Mathis Albert signed the shirt at that session, the crest and lettering visible in the capture, and that proof code is what a collector holds against Walkouts' own record of the day.
For the collector
Owning this shirt is owning an authenticated line to Mathis Albert at the very outset of his career: the youngest player at the entire 2025 FIFA Club World Cup, aged 16 years and 27 days when Dortmund named him in their squad. It is a period-produced original from the 2025-2026 season itself, and the signature dates to that same early chapter in his story.
What You Receive: The Signed Shirt
You receive the signed shirt, exact video proof of signing, sent unwatermarked after purchase, a certificate of authenticity, and a letter of authentication.
Why Walkouts
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: 26MAB20031741
Certificate number: AG004063
Grade: 8 - Signatures: 1 - Signer: Albert, Mathis - Item: Jersey
View the certification here: AG004063
Is this shirt match-worn or match-issued?
No. This is a Fanshop Match shirt, the same quality as worn on the pitch but sold through retail, with no match-worn or match-issued provenance of its own.
How is Mathis Albert's signature authenticated?
Beckett issued certificate AG004063 for this signature, with a certificate of authenticity, a letter of authentication, a grade of 8 out of 10, and a One Beckett Medallion hologram sticker on the item.
Where and when was the shirt signed?
Albert signed the shirt at Manchester Airport, Manchester, England, on 17 March 2026. Walkouts documented the session under proof code 26MAB20031741.
What size and condition is the shirt in?
This is a size L shirt in excellent condition, with the original tags still attached.
- Free worldwide shipping on all orders.
- Shipped with trusted carriers: FedEx, DHL, UPS.
- Every order packaged securely for safe delivery.
- Tracking number provided once your order is shipped.
- 14-day returns from the day you receive your item. Arrived damaged or not as described? We cover the return shipping.
