Signed Mathis Albert 41 Dortmund 2024-25 | Fanshop Match KidSuper

Beckett graded this signature 9 out of 10, on Mathis Albert's Borussia Dortmund 2024-2025 KidSuper edition shirt, size L, on the back, below the number. Albert signed it on 17 March 2026 at Manchester Airport, Manchester, England, and it arrives in a Luxury Gift Box.

The shirt

Puma made this Borussia Dortmund shirt as the 2024-25 KidSuper special edition, with the original tags still attached and the item in excellent condition throughout, front and back. The design keeps Dortmund's yellow and black club identity while layering in KidSuper's own creative visual language, a genuine period piece from the collaboration's own season rather than a later reissue.

Authentication by Beckett

Beckett issued certificate AG004065 for this signature, documented with a certificate of authenticity, a letter of authentication, and a grade of 9 out of 10. A One Beckett Medallion hologram sticker seals the signature to that specific certificate, keeping this signed football shirt and its paperwork tied together. A collector can check the certificate number, the letter and the hologram directly against Beckett's own published record.

The signing

Walkouts recorded this signing directly: proof code 26MAB20031641 ties the shirt to a session at Manchester Airport, Manchester, England, on 17 March 2026. Albert is seen in his Dortmund travel jacket signing at that same session, and that proof code is what a collector holds against Walkouts' own record of the day, rather than taking the claim on trust.

Borussia Dortmund at 2025 FIFA Club World Cup

Borussia Dortmund reached the quarter-finals of the 2025 FIFA Club World Cup, the newly expanded 32-club edition, eventually losing 3-2 to Real Madrid at MetLife Stadium in New Jersey. Albert was named in Dortmund's squad for that tournament, making him the youngest player at the entire competition at 16 years and 27 days, a specific distinction tied to that campaign.

Included in Dortmund 2025 FIFA Club World Cup squad

Albert, born 21 May 2009, plays as a winger and is naturally right-footed, a teenager already appearing on the biggest club stage the sport has. Being the youngest player at the entire 2025 FIFA Club World Cup is a genuinely rare marker this early in a career, and this shirt is a period original from that same 2024-25 KidSuper collaboration, with the autograph dating to that same era.

What You Receive: The Signed Shirt in a Luxury Gift Box

You receive the signed shirt, exact video proof of signing, sent unwatermarked after purchase, a certificate of authenticity, and a letter of authentication. It arrives in a Luxury Gift Box.

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.