25657OR, Perpetual Calendar, Mother of Pearl Dial, Pink Gold 3310 preserved in its full set

preserved in its full set

Air & Space Museum

partly for its charismatic cerulean tone but also for the watch’s significance to Japan

This is an unconventional integrated sports watch imagined carte blanche by one of the most exacting independent watchmakers

806 Navitimer with a Valjoux 72

25657OR, Perpetual Calendar, Mother of Pearl Dial, Pink Gold 3310 preserved in its full setA ref. 25657OR Audemars Piguet Quantime Perptuel with a mother of pearl dial. There are only 362 examples of this reference to start, but it is estimated that no more than a handful were ever made with mother of pearl dials. This was, in its day, the worlds thinnest perpetual calendar at 3. 95mm, the watch that proved mechanical complication still had its place in the market against the growing shadow of quartz. Its historic significance stands alone,