A surprise party is probably the last thing anyone turning 50 would want. Those celebrating five decades would rather be surrounded by loved ones who understand their wishes and enjoy a good dinner with a nice selection of wines. That’s likely what Patek Philippe had in mind when the iconic Nautilus reached its 50th anniversary. The four jubilee models feel familiar yet still festive in a way that suits the respectable age of this luxurious sports watch. Fratello got invited to the party and went hands-on with the Patek Philippe Nautilus 50th-anniversary watches, especially the two 41mm “Jumbos.” How do you celebrate the birthday of a watch that, 50 years after its release, has grown into a myth? Calling the Nautilus an “icon” reflects the fact that waiting lists are endless and secondary-market prices reach triple the retail price, hence the term “myth.” The original Nautilus is the ref. 3700/1A “Jumbo,” a bold watch in every respect.…