3 Answers

It compresses air which is forced into the fuel mixture.

If there was one factor that continually came up in conversations between collectors, dealers, buyers, and sellers it was condition. link Max Braun link was behind the showcase assisting the Wind Vintage team for most of the show and link notes that a Rolex GMT-Master ref. 6542 in "immaculate condition" was asked about and taken out of the case 75 or 80 times, while "a lightly polished Day-Date, for example, I probably showed that twice."

This link is purely a personal pick. I've always been more of a Royal Oak fan than a Nautilus one link but when I was able to handle this tropical dial 3700 in person for link the first time I was blown away. The dial has aged to a rich chocolate brown hue with slight discolorations throughout a perfect complement to the deep tone of the yellow gold case and bracelet.