Lot 64

A. Lange & Söhne Glashütte B/Dresden, Movement No. 40587, Case No. 40587, 52 mm, 112 g, circa 1898
A doctor's extremely rare Glashuette watch with independent jumping seconds mechanism "seconde morte", sold in 1898 for 566 marks - manufactured in quality 1A
Case: 18k pink gold. Dial: enamel. Movm.: 3/4 plate movement, applied "seconde morte"-mechanism, gold screw compensation balance.
Jumping seconds mechanism or "seconde morte"
Lange felt that the readability of the jumping auxiliary seconds was not satisfactory in a pocket watch, so he started following another course. By 1867 he had designed a mechanism which allowed an independent large central seconds hand to jump every second. The hand had a stop device but could not be reset to zero. 1877 his sons filed a patent for a slightly modified version of A. Lange's mechanism (no. 182). This seconds mechanism on a 3/4 plate created a precision watch which had the indication system of an astronomical pendulum clock but was portable.
Source: Reinhard Meis "A. Lange & Söhne" published by Callwey, Munich 1997, p. 238.

Sold