Hermes Watch Arceau Petite Lune Large Model 38 mm Moon Phase Sapphires Hermes Watch Arceau Petite Lune Large Model 38 mm Moon Phase Sapphires Large Arceau Petite Lune 38mm Watch in Shiny Red Alligator Single Tour Strap Hands On: The Cosmic Beauty Of The New Herms Arceau Petite Lune Hermes Watch Arceau Petite Lune Large Model 38 mm Moon Phase Sapphires. Designed by Henri d'Origny in 1978, the Arceau watch is a masterclass in equestrian inspired horology, featuring unique stirrup shaped lugs. This "Petite Lune" edition features a spangled white lacquered dial and a Manufacture movement, capturing the poetic movement of the moon against a vibrant red alligator strap. Herms Manufacture movement H1837 Spangled white lacquered dial with moon phase Shiny red alligator single tour strap