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.