Jacob & Co. The Mystery Tourbillon White Diamonds & Rubies 50 mm watch. Model reference: SN800.30.BD.AC.A. 18K white gold case set with diamonds. Diamonds dial. Manual-winding movement. Blue alligator leather strap. 18K white gold folding clasp set with 18 baguette white diamonds. Swiss made. The watch comes in the original packaging, with a set of documents and 2 years warranty. At Modern Wrist we offer new authentic watches at the best prices.