TECHNICAL DATA
1815 MOONPHASE
Ref. 212.050
Movement : Lange manufacture calibre L943.2, manually wound, crafted to the most exacting Lange quality standards and largely decorated and assembled by hand; precision-adjusted in five positions; three-quarter plate made of untreated German silver, with sunburst finish; balance cock in honey-coloured gold, engraved by hand
No. of movement parts : 220
No. of jewels : 26
Escapement : Lever escapement
Oscillation system : Shock-resistant glucydur screw balance, superior-quality balance spring manufactured in-house, frequency 21,600 semi-oscillations per hour, whiplash-spring beat adjustment system
Power reserve : 45 hours when fully wound
Functions : Time indicated in hours, minutes, and subsidiary seconds with stop seconds; moon-phase display
Operating elements : Crown for winding the watch and setting the time, push piece for the moon at 10 o’clock
Case dimensions : Diameter: 37.4 millimetres; height: 8.9 millimetres
Movement dimensions : Diameter: 27.5 millimetres; height: 3.9 millimetres
Case : Honey-coloured gold
Dial : Solid gold, argenteì, guilloched; lunar disc in solid honey-coloured gold
Hands : Blued steel
Glass and caseback : Antireflection-coated sapphire crystal (hardness 9)
Strap : Hand-stitched, red-brown crocodile strap with Lange prong buckle in solid honey-coloured gold
Edition : 265 watches
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