Audemars Piguet Royal Oak Day-Date Moonphase ref 25594ST Mk1 Dial 1961 while the recessed sections show

while the recessed sections show a beautiful blend of blue and purplish tones—an absolutely gorgeous effect

- Reference 16600- X636xxx serial dates to 1991

This is a cool watch with a stealthy appearance

especially the arrow minute hand – they give the watch a cool look that is very unique

which completes one full rotation every 24 hours

Audemars Piguet Royal Oak Day-Date Moonphase ref 25594ST Mk1 Dial 1961 while the recessed sections showThis beauty combines the legendary design of the original Royal Oak with classic 36 mm case sizebut with a twist: it is also a bona fide complicated watch from one of the great Grandes Maisons of horology , introduced in 1984. The reference 25594ST features day and date displays in large sub registers at the 3 and 9 oclock positions, along with a moonphase indicator at 6 oclock. And then theres the charm: the layout of the sub dials and moonphase