A. Lange & Söhne Lange 31 Rose Gold
Written by James Matthews
A. Lange & Söhne Watches, The Lange 31 is now available in an 18kt rose gold version. The case measures 46mm x 16mm. Both crystals are sapphire and it is water resistant to 30 meters. The dial is solid silver with 18kt rose gold hands.
Movement of the lange 31, calibre l034.1., through the sapphire-crystal caseback. Plates and bridges made of untreated German silver; balance clock engraved by hand, four screwed gold chatons. Key winding mechanism, stacked twin mainspring barrel with a power reserve of 31 days; bearing secured with three screws. Constant-force escapement with pivoting lever, remontoir spring, and fourth wheel with transparent sapphire jewel. 406 meticulously hand-finished individual parts. Shock-proofed glucydur screw balance, Nivarox balance spring, whiplash precision index adjuster with patented beat adjustment mechanism; frequency: 21,600 semi-oscillations per hour.
It is precision-adjusted to five positions, with twin mainspring barrels; plates and bridges made of untreated German silver; balance cock engraved by hand and is comprised of 406 parts. The movement measures 37mm x 10mm.
This post was written by James Matthews. If you have any questions or comments you may contact him at james@jewelerslounge.com
