To mark the 40th anniversary of the Nautilus, Patek Philippe adds two limited edition models to the collection. Namely, the Patek Philippe Nautilus Ref. 5711/1P 40th Anniversary and the Patek Philippe Nautilus Chronograph Ref. 5976/1G 40th Anniversary in 18K white gold. The former will be available in a limited edition of 700 watches and the…