Not one but two double-signed Patek Philippe watches bearing the Gübelin signature along with that of the manufactory, caused quite a stir at international auctions in November. A unique Nautilus Jumbo, Ref. 3700/1 sold for CHF 2,540,500 at Phillips in Association with Bacs & Russo. At Koller Auctions, the Patek Philippe Ref. 1599, believed to…
