Marteau : The Heat Wave
Wednesday, 10 - Wednesday, 17 June 2026

De Bethune x Urwerk, PIECE UNIQUE Moon Satellite

Lot Details

What You Should Know: - A Unique Piece Created by De Bethune and Urwerk for Only Watch 2019 - Combines Urwerk's Wandering Satellite Hours with De Bethune's Signature Design Codes - Widely Regarded as One of the Most Successful Collaborations in Independent Watchmaking - One of the Defining Watches of the Only Watch 2019 Auction - An Historically Important and Entirely Unique Example of Contemporary Independent Watchmaking Created jointly by De Bethune and Urwerk for Only Watch 2019, this one-of-a-kind Moon Satellite unites two of the most influential independent watchmakers of the modern era. The collaboration is instantly recognisable from every angle, combining Urwerk's wandering satellite hours with De Bethune's floating lugs, spherical moonphase, mirror-polished titanium case, and characteristically refined movement architecture. Far more than a co-signed project, the watch represents a genuine fusion of both brands' identities and is widely regarded as one of the most successful collaborations ever produced in contemporary horology. A standout of the 2019 Only Watch auction, the Moon Satellite remains among the most recognisable pieces ever created for the charity event, with very few important Only Watch watches having since reappeared publicly. Historically significant, mechanically ambitious, and entirely unique, it represents a rare opportunity to acquire a landmark work of independent watchmaking. IN THEIR OWN WORDS: " This was a beautiful project, made for a cause that will always be close to our hearts: the well-being and health of children. When Denis Flageollet and I first talked about it, we both felt it had to be something special : two independent minds, two deeply personal approaches to watchmaking, brought together by a shared belief that our craft, at its finest, could serve a noble cause, Life. We each poured our own intimate understanding of horology into this piece, and what came out of it is something neither of us could have made alone." - Felix Baumgartner, co-founder of Urwerk. "A watch is, at its core, a symbol of life. We pour human energy into it to make a mechanical heart beat, and that heart, in turn, gives its energy back. This piece, creation for the Foundation Only Watch, is the purest expression of that belief. Whoever chooses to make it their own becomes part of the cycle. Their gesture sets in motion a new current of energy, one that will travel far beyond the watch itself, and quietly transform a child's life. That is the most beautiful complication a timepiece can hold." - Martin Frei, Co-founder of Urwerk