Innovative German gold early dual time zone lever Circa 1882

Rose gold hunting cased lever independently adjustable early dual time zone 
–
A very fine, important and innovative, probably unique German 18 carat rose gold hunting cased pocket lever chronometer with independently adjustable early dual time zone with four hands from the centre, circa 1882. Entered in the sales register in March 1882, sold to C.E. Wolf & Co, Reichsstrasse, Dresden, for 557 Marks. Frosted gilt 3/4 plate Lange movement, 1st quality, jeweled to the third wheel, six in gold screwed chatons, winding with Lange’s patented system for the removal of the mainspring barrel, straight-line lever escapement with gold pallet fork and gold escape wheel, 16.9 mm Lange cut bimetallic balance with gold screws, blued steel Breguet balance spring, diamond endstone, unusual rack and pinion micrometer regulator index, unusual hand setting mechanism with lever in the bezel for the first time zone, the second time zone hands set from the back. Gold hinged cuvette. White enamel dial with Roman numerals, outer minute track, subsidiary seconds. Gold spade hands for the first time zone and blued steel spade hands for the second. Polished case. Dial, movement and case numbered. Accompanied by the A. Lange & Sohne certificate.
–
Diameter: 54 mm
–
Signed: A. Lange & Söhne Glashütte i/Sachsen