Less than a thousand steel 5711's were made with the Cal. 315 SC movement, making it one of the rarest Nautilus' ever produced. In time these important first series examples will become the most valuable of all the Jumbos.

First launched in 2006, for the first 6 months the Jumbo Nautilus reference 5711/1A featured the Geneva seal Cal. 315 SC self-winding movement. Subsequent 5711s were equipped with the Cal. 324 SC movement, which apparently was not ready in time for the 5711's launch, so the Cal. 315 SC was adopted as a stand in. 

UK retailed at Watches of Switzerland in March 2007, worldwide demand for this 40.5mm steel Jumbo Nautilus 5711/1A-010 with dark blue embossed dial, is as strong now as ever. The industrial chic 3-part case design with integral bracelet, its comfort on the wrist, discreetness, plus its residual value, have made this the world's hottest luxury sports watch, and its waterproof to 100m!

Just back from an official Patek service and covered by their international service warranty for the next two years.