Rare helmet and driver signature horn buttons from Momo’s iconic racing collection
by Mads – May 30, 2020

Horn buttons may look tiny, but in the Momo Signature Series, they are essential. Each button pairs with a signature steering wheel, often showcasing race driver helmets or authentic signatures, making them coveted collectibles.
The series began in the mid-1970s with the Jackie Stewart steering wheel, the first Momo wheel featuring a stacked logo. Early helmet horn buttons were produced with chrome rings, including Stewart, Clay Regazzoni, and Jacky Ickx. By the mid-1970s, Momo transitioned to black plastic rings, a style that became standard for later helmets and signature buttons.
All helmet illustrations in the Momo Signature Series face to the right – except for the Jacky Ickx version, which is the only one facing left. This makes it a subtle but distinctive outlier within the series.
Signature buttons were sold individually, not always paired with a steering wheel. Known color schemes include:
No verified Clay Regazzoni signature horn button has been documented to date.
Chrome and plastic versions; signature buttons black/silver and red/black.




Chrome and plastic; signature buttons unknown.


Chrome and plastic; signature buttons black and beige.



Only plastic; signature buttons yellow/black, black/beige, red/black.



Only plastic, very rare; signature buttons black/silver and yellow/black.


Only plastic, extremely rare; helmet and signature buttons.


Only plastic, rare; black/silver and yellow/black signature buttons.



Producing a horn button was far simpler and less risky than creating a full steering wheel. As a result, a wide range of horn buttons exists in different colors, logos, and brand variations. The exact number is unknown, offering enthusiasts endless opportunities to expand their collections.
These horn buttons are more than decoration – they are miniature works of racing art. Collectors treasure them as pieces of motorsport heritage, linking design, driver legacy, and rarity.
Which Momo Signature Series horn button would you add to your collection? The hunt is ongoing, and every discovery is a small triumph.
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