This steel Patek Philippe Nautilus Jumbo Ref 3710/1A “Comet” Power Reserve is rated 9 out of 10. It is the same size as the Ref 3700/1A, but features a rare and beautifully finished, mechanical automatic winding, Patek Philippe Calibre 330 S C IZR behind the solid back case. This is the only movement used with this reference, and was not used in other models. The movement comes with the Geneva seal hallmark, 29 jewels, with Patek’s innovative Gyromax balance wheel and a 21k gold rotor. Watch only.
