Back view featuring No. 4 and signature on a red and white football shirt.
Front view of the red and white football shirt with Ajax crest and three X's detail.
Back view displaying No. 4 and Ronald Koeman's signature on a red and white football shirt.
Front view of red and white football shirt featuring zigzag collar, adidas logo, and Ziggo wordmark.
Detail view featuring the No. 4 and Ronald Koeman's signature on a red football shirt.
Detail showing signature and number 4 on a red football shirt.
Close-up of the embroidered adidas logo on a red Ajax shirt.
Crest detail showing AFC Ajax logo with text 'AMSTERDAMSCHE FOOTBALL CLUB' and dates '1900-2025'.
Detail showing AFC Ajax 125th Anniversary patch with three stars and embossed '18 MAART 1900'.
White label with product details for Ajax 125 anniversary shirt by adidas.
A black-ink signature across the white number 4 on the back of a red and white Ajax shirt, part of Ronald Koeman's signed 125th Anniversary shirt.

Signed Ronald Koeman Ajax 125th Anniversary | Beckett Grade 9

Walkouts premium collection


Product details

Walkouts premium collection

Not for sale today. Private offers considered.

Ronald Koeman's signed AFC Ajax 2024-2025 Fanshop Authentic shirt is number 4, made by Adidas. Beckett has graded the signature 9 out of 10, the first example of his autograph Beckett has certified, signed in April 2025 in Zeist and independently verifiable.

Ajax's 2024-25 commemorative kit in red and white, number 4

Adidas produced this long-sleeved shirt during the 2024-25 season itself, the original production run rather than a later reissue, as part of Ajax's Commemorative kit in red and white. It carries the club's 125th Anniversary patch, with three stars and an embossed '18 MAART 1900', alongside a white Adidas product label for the anniversary shirt. In size L, the shirt is signed on the back and is in mint condition.

Authentication by Beckett

Beckett holds a certificate for this signature on Koeman's 2024-25 Ajax shirt and graded the signature 9 out of 10, one point short of a perfect score. The paperwork includes a certificate of authenticity and a separate letter of authentication, alongside a record confirming that the signing itself was witnessed. Beckett's label on the shirt is an iridescent hologram disc sticker.

Signed in Zeist, April 2025

Koeman signed this Ajax 2024-25 shirt on 20 April 2025 in Zeist, the Netherlands, the moment photographed beside a window, the shirt's red body and white number panel catching the light alongside its matching white sleeve. Walkouts assigned proof code 25RKO20020004 to this signing, its own documentation of that date and place, unique to this shirt alone and separate from any third-party certificate.

Career goals as a defender

Koeman scored over 250 goals in his career as a defender, the top-scoring defender in world football with 192 league goals by 1997. He converted 25 consecutive penalties in La Liga, a record in 1995, and was named Dutch Footballer of the Year in 1988 and 1987. This Ajax shirt was produced in the 2024-25 season, its authenticated signature from the same production, a line to that record-setting career.

Beckett certificate, letter and signing photos

You receive the original 2024-25 fanshop shirt with a certificate of authenticity and a letter of authentication from Beckett. Photographs of the signing come with it.

Why Walkouts

Look up certificate BU08842 at Beckett: the record shows this signature on file. Walkouts keeps its own record of that signing, and the proof code ties this shirt to it.

Player Ronald Koeman
Team AFC Ajax
Season 2024-2025
Shirt Fanshop Authentic
COA Beckett
Proof Signing Session (Witnessed), Exact Photo Proof, Certificate of Authenticity (COA), Letter of Authentication
Size L
Color Red,White
Fabric Polyester
Sleeve Length Long
Neckline Buttons
Condition Mint (M)
Date 20 April 2025
Location The Netherlands, Zeist
Kit Commemorative
Number 4

View the signing verification here: 25RKO20020004

Certificate number: BU08842

Grade: 9 - Signatures: 1 - Signer: Koeman, Ronald - Item: Jersey

View the certification here:  BU08842

How can I check this shirt is authentic?

Beckett certified it under certificate BU08842, which Beckett's own online database holds. Walkouts also keeps its own record of the signing, under proof code 25RKO20020004.

When and where was it signed?

Ronald Koeman signed it on the back in Zeist, the Netherlands on 20 April 2025.

What comes with the shirt, and how is it delivered?

It comes with the original 2024-25 fanshop shirt, photographs of the signing, a Beckett certificate of authenticity and a Beckett letter of authentication. Shipping is free worldwide.

What condition and size is it?

Mint condition. Size L. Made by Adidas.

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Ronald Koeman, Ajax 125th Anniversary, signed No. 4 back, Beckett COA

★★★★★ ★★★★★ 5.0 / 5.0

Official fanshop shirt signed at an organised signing session and accompanied by Beckett certification.

Signed on 20 April 2025 in Zeist, The Netherlands during an organised player signing session and offered with a Beckett certificate, this Ajax 125th Anniversary fanshop shirt carries clear provenance. The photos show Ronald Koeman’s signature on the back over the printed No. 4, plus front shots that display the commemorative 125th anniversary crest, embroidered adidas branding and the Ziggo sponsor. The shirt is a fanshop short sleeve edition made for the anniversary collection rather than a match issued or match worn item. Mint condition is visible in the provided photos with no fabric faults or marks, and the listing states a Certificate of Authenticity is supplied. The piece is notable as the first Beckett certification recorded for this player in our records. The listing does not offer an online COA check.

A strong display piece for Ajax supporters and Ronald Koeman collectors, with a clear back signature and Beckett certification.