Perpetual moon obsidian

  • Limited edition
  • 30 meters water resistance
  • 42 mm case
  • Alligator leather strap

The shifting moon

With its XXL moon, the Perpetual Moon is ruled by Selene, the goddess of this celestial body. Arnold & Son presents a limited edition of 28 pieces featuring this distinctive complication, adorned with an extraordinary material rarely seen in watchmaking. With a dial made from Mexican obsidian, this timepiece appears to be bathed in bronze moonlight. The stone is reflected in the large rhodium-plated moon and the perfectly polished hour-markers. The result is an interplay of reflections, vibrations and warmth that echoes the light of Earth’s satellite.

Technical Specifications


Hours Minutes Perpetual moon phases indicator


42 mm 18-carat red gold (5N)


Golden obsidian Blue lacquered guilloché sky Silvered constellations Engraved rhodium-plated moon disc


blue alligator leather hand-stitched with silver-coloured thread

Water resistance

30 meters

Limited edition

28 pieces


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