Dutch rare 24 hour dial marine ship chronometer A.Hohwu Amsterdam, No. 20...

 Dutch marine chronometer  Andreas Hohwu Amsterdam, super rare 24 hours dial No. 2..., c. 1850. 
 The movement is contained in a gimballed brass bowl, which can be locked from the side 
by a slide and is accompanied by a Breguet key. The silvered brass dial is of traditional design, with a central Roman
 chapter ring, and an up-and-down dial above the middle, indicating the state of winding and 
below a second ring, both with blued steel hands, the time being indicated by two gold hands. 
The two-day duration movement has Earnshaw spring-detect escapement with a bimetallic.
Sizes of the wooden box 160/160/175 mm.
The dial diameter  90 mm.