
Grönefeld 1941 Quadrivium: A Remontoire, a Flying Tourbillon and Jumping Seconds in One 40mm Case
The Horological Brothers stack four complications into a hand-wound 473-component movement. Tantalum and platinum, 28 pieces each, from EUR 280,000.
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The Horological Brothers stack four complications into a hand-wound 473-component movement. Tantalum and platinum, 28 pieces each, from EUR 280,000.

Atelier Wen and Massena LAB build a 40 x 10.2 mm integrated sports watch in 99.9% pure tantalum, with solid 18k gold tremblage dials by Coralie Mercier and a reworked Girard-Perregaux GP03300. 50 pieces, CHF 33,800 excl. taxes, deliveries from early 2027.

Moser extends its tantalum experimentation into one of its most elegant complications: the Endeavour Perpetual Calendar Concept now comes in a full tantalum case AND — for the first time — a tantalum dial. Limited to 50 pieces at USD 94,500.

Zenith takes its Georges Favre-Jacot (G.F.J.) collection into rare-metal territory with a 39.5mm tantalum case housing the legendary Calibre 135, a black onyx dial, a grey mother-of-pearl small seconds, 11 baguette diamonds, and a 20-piece production run. CHF 73,900.

Thomas Fleming's sophomore act: a tantalum Pacific and a rose gold Redwood, both riding a hand-wound 7-day caliber co-developed with Jean-Francois Mojon. 25 pieces each.