Clock 20

Deck Clock

7.25 x 7.25 x 6.75 inches

Serial 823

Two tiered beechwood cased, marine gimbaled chronometer with 56−hour (two day) power reserve, calibre 100, s/N 823, made by A. Lange & Sohne, Glashutte/Dresden, circa 1940/1941.

deck clock a deck clock b deck clock c deck clock d deck clock g deck clock h deck clock i deck clock j deck clock l

Case: 7.25" x 6.75" x 7.25", stained beechwood with beveled glazed top, single lid single hinged carrying case with brass carrying handles and push button lid lock. The case is fitted for a gimbaled brass bowl with screw down glazed bezel, gimbal ring locked by swiveling arm mounted in the front right corner. There are two gimbals attaching at four points to the case, each gimbal on the same ring is 180 degrees apart and gimbals on different rings are spaced at 90 degrees. This is that despite sever rolling or pitch and yaw the dial will stay level.

Dial Round silvered dial with Roman hour numerals, closed minute track to the outside, subsidiary seconds at 6 containing the serial number of this deck watch, #823 (also noted on the movement plates), up−and−down power reserve indicator at 12 indicated 56 hours of power reserve. Gilt Spade hands and the dial signed, "A. LANGE & SÖHNE, GLASHÜTTE b/DRESDEN, NO. 823".

Movement: Gilt−finished lever movement with chain driven fusee and an Earnshaw escapement, Guillaume's integral cut bimetallic balance with four cylindrical heat compensation weights (screws), 12 jewels and snail winding. The plates are numbered '823', and there is a circular stamp on the upper plate near the balance wheel. The movement is beautifully constructed. It is considered one of the rare calibre 100 movements, of which only 113 marine chronometers were made, the last one sold Feb. 28 1943 bearing number 830 (There were 830 units made of the calibre 100, but most were large watches and not marine chronometers. Serial Number 01−410 were made between 1896 and 1922, while No. 411−830 were made between 1922 and 1943. (Following this sale during WWII those chronometers that followed were made by a combination of A. Lange & Sohne and the Wempe instrument company.

Condition: Movement − Excellent condition and a beautifully made example. Genuine, original and functional. Case − in very good condition with the key inside the case and all components present and undamaged. Dial − Excellent.  A very fine scientific instrument of the sea.