Greubel Forsey makes more tourbillons per watch than anyone except maybe Vacheron Constantin's haute complications atelier. The brand's entire identity rests on tourbillon construction, balance wheel innovation, and absolutely uncompromising hand-finishing. The Quadruple Tourbillon literally has four tourbillons running on different axes. For anyone planning to sell a Greubel Forsey...

The Greubel Forsey Hand-Made 1 took six months to assemble per piece, in a workshop in La Chaux-de-Fonds, by hand. The brand operates at the absolute edge of haute horlogerie production volumes. Some references are made in literally single-digit annual quantities. For anyone planning to sell a Greubel Forsey watch...