A. Lange & Sohne Richard Lange Perpetual Calendar “Terraluna”

It is an exceptional timepiece on both sides: the dial reflects the regulator design of high-precision scientific clocks while the movement side features an orbital moon-phase display. The model version in white gold features an argente-coloured dial crafted from solid silver.
Case dimension
Case diameter: 45.5 mm
Case thickness: 16.5 mm
Winding mechanism
Manually wound movement
Power reserve
336 hours
Complications
Outsize date, Calendar function, Moon-phase display, Constant-force escapement, Day/night indicator, Power-reserve indicator, Day-of-week display
Reference
180.026FE / LSLS1803AB
Dial colour
Argente
Case material
18-carat white gold
Case back: sapphire glass
Case dimension
Case diameter: 45.5 mm
Case thickness: 16.5 mm
Water resistance
3 bar
Movement designation
L096.1
Number of movement parts
787
Winding mechanism
Manually wound movement
Power reserve
336 hours
Balance frequency
21,600 semi-oscillations per hour (3.0 Hz)
Complications
Outsize date, Calendar function, Moon-phase display, Constant-force escapement, Day/night indicator, Power-reserve indicator, Day-of-week display
Leather Strap
Black, Alligator leather
Our alligator straps fully comply with the CITES regulations: Species – alligator mississippiensis. Extraction method – farmed. CITES Appendix – Appendix II
Deployant buckle
18-carat white gold
Distance between lugs
22 mm