Marble and aventurine for Arnold & Son's first three-dimensional moon, which rotates on itself faithfully representing the motion of the moon phases on an aventurine dial depicting the starry sky. Measuring 12 millimetres in diameter, the moon emerges from the mainplate of the A&S1021 manual calibre and rises above the dial protected by a 'glass box'. The same happens on the back, where the sapphire crystal rests on the wrist and where a secondary moon-phase display is located. A red gold case for this limited edition of 28 pieces.
Price: 43,900 Swiss francs (excluding tax).
