Case approx.18 x 18 x 18cm, mahogany, company sign No. 203943B, cardanic suspension made of black so-called "metal rubber", Bakelite case, metal back with marine insert number M 4177, anchor chronometer calibre 48, very well preserved number-equivalent dial with power reserve indicator, black lacquered hands, movable, cleaning urgently needed. Lt. Stammbuchauszug delivered to the Deutsche Seewarte Kriegsmarine 1944. ALS Marine chronometers with Marine operational number are particularly sought after collector objects and very rare!