The A. Lange & Söhne Lange 1 191.066 is a limited edition of 250 pieces created in honor of the 25th anniversary of the Lange 1. It features a a deep-blue printed argenté dial with a recess, blue date numerals and a hand-engraved balance cock with blued lines.
Movement
Apart from familiar hallmarks such as the twin mainspring barrel with a power reserve of 72 houres, the 2015 calibre L121.1 has an escapement featuring a balance wheel with eccentric poising weights as well as a freely oscillating balance spring crafted in-house. Beneath the hand-engraved balance cock, the balance beats at a frequency of 21,600 semi-oscillations per hour and assures high rate accuracy.
