“Osmior” is the name given to an 01cl, special metal alloy, composed principally of gold with a colour that is close to platinum. It was regularly used by the company to produce the cases of its Watches with “grandes complications”, and this made it a natural choice of name the classic line in the L.Leroy collections. The very essence of neoclassical watchmaking, the Osmior line perfectly encapsulates the elegance, refinement, discretion and absolute quality of the watches that we produce in very limited numbers in our Workshops.

Several types of medium and advanced complications are offered in these products that eloquently express our passion for Watchmaking. The automatic single push-button, column-wheel chronograph, the automatic perpetual retrograde calendar, or the automatic regulator with tourbillon, are just some of the exceptional pieces in the Osmior line by L.Leroy.

Public price: 51,900 € in pink gold 4N et 52,900 € en white gold available at Dubail

Movement specifications (Cal. L411.2)
Diameter	:	27.00 mm (12"’)
Total thickness of the movement	:	5.50 mm
Frequency	:	28’800 vibrations per hour
Jewels	:	32 Rubies
Power reserve	:	Exceeding 48 hours (double barre!)
Bridges finishing	:	« Côtes de Genève »
Moon-faces	:	In gold. Setting on a Goldfuss plate (semi-precious stone)
Central rotor	:	In 22 carat yellow gold with the heavy segment in 18 carat white gold
Exterior specifications
Case diameter	:	41.00 mm
Total thickness of the watch	:	11.50 mm
Water resistant	:	To 50 meters (5atm)
Crystal	:	Sapphire on the top and on the back
Available	:	In pink(4N18) or white gold (18 carat)
Dial	:	Engine-turned by hand, piece by piece
Hands	:	Blued steel or gold plated
Straps	:	In genuine alligator (also on the back), hand stitching
Buckle	:	Traditional tongue buckle or double folder deployment buckle in gold (optional)
Numbering	:	All Retrograde Perpetual Calendar Osmior are individually numbered

Thanks to the Maison Dubail (place Vendôme).

Thierry Castagna / La Cote des Montres™
Photos Luc Virginius