Louis Erard 1931 Triple Calendar Moonphase – Swiss Automatic – Dubois Dépraz Complication – Tonneau Case 42 x 34 mm A refined and elegant Louis Erard 1931 Triple Calendar Moonphase, presented in a beautiful tonneau-shaped stainless steel case measuring 42 x 34 mm. This watch combines classic Swiss watchmaking with a sophisticated calendar and moonphase display, powered by a Swiss automatic Louis Erard movement with Dubois Dépraz complication module. The silver dial, open-worked details and transparent caseback give the watch a very distinctive and luxurious presence. Technical Details Brand: Louis Erard Model: 1931 Triple Calendar Moonphase Case Material: Stainless steel Case Shape: Tonneau Case Size: 42 x 34 mm Glass: Sapphire crystal Caseback: Open caseback with visible automatic movement Dial: Silver dial with textured guilloché-style decoration and open-worked details Movement: Swiss automatic Louis Erard movement with Dubois Dépraz complication Functions: Hours, minutes, seconds, triple calendar and moonphase Calendar: Day, date and month indication Water Resistance: 50 m, not tested Strap: Generic leather strap, fits a wrist up to approximately 22 cm Buckle: Original Louis Erard buckle Box: Generic box included Condition Grade: Case Grade A / Glass Grade B+ Condition Report The watch is in very good overall condition. The stainless steel case is graded A, showing only fine traces of use due to normal wear. The tonneau case shape remains elegant and well preserved, with polished surfaces and a strong wrist presence. The sapphire crystal is graded B+, with some fine scratches/signs visible due to normal wear. The silver dial is very attractive, with a textured pattern, open-worked mechanical details, day and month displays, pointer date scale and moonphase aperture, all creating a sophisticated and technical appearance. The open back case beautifully reveals the automatic movement, signed Louis Erard, with visible finishing and mechanical architecture. The watch is fitted with a generic leather strap and an original Louis Erard buckle, suitable for a wrist up to approximately 22 cm. Water resistance is marked 50 m but has not been tested, therefore no guarantee is offered regarding water resistance. Story & Heritage Louis Erard is a respected Swiss watchmaker known for creating elegant mechanical watches with traditional complications at a refined level of craftsmanship. The brand has always focused on classical watchmaking values, offering watches that combine Swiss mechanical reliability with timeless design. The 1931 collection pays tribute to the founding spirit of Louis Erard and to the golden age of mechanical watches. This Triple Calendar Moonphase model is a perfect example of that philosophy: elegant, technical and beautifully balanced. The calendar indications, moonphase display and open dial architecture give the watch the charm of traditional complications, while the tonneau case adds a distinctive Art Deco-inspired personality. The use of a Dubois Dépraz complication adds further interest for collectors. Dubois Dépraz is well known in Swiss horology for producing sophisticated modules used in many complicated mechanical watches. In this Louis Erard, the result is a watch that feels both refined and mechanically engaging. A beautiful collector’s piece for those who appreciate Swiss automatic complications, moonphase watches and elegant tonneau case designs with strong visual character.