c.1942 Very Rare Japanese 56-Hour Marine Chronometer.
Miscellaneous /
Japanese
Inv. #: g157
Maker: Daini-Seiko-sha, V-031
Circa: 1942
Size: Dial - 4in.Chronometer Case – 7.5 in. (high), 7.25 in. (wide, deep)Outside Case - 8.5 in high, 9.5 in (wide, deep)
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A very rare Imperial Japanese Navy Chronometer manufactured at the beginning of WWII that still retains the original winding key, case key and felt lined carrying case.
Case
The three-tiered case is made from a Japanese hardwood and is fitted with brass handles to the sides, has traditionally shaped brass escutcheons, chrome plated hinges and a silvered engraved plaque with ‘V-031’ and two stamps indicating naval service.
Dial
The engraved matt silvered dial has Roman numerals for the hours, Arabic numbers for the subsidiary second’s dial and winding indicator, blued steel hands, Japanese characters and the serial number, V-031, in red. It is set behind a screwed bezel with a knurled outside edge, silver reflecting ring and beveled glass.
Movement
The finely finished gilt chain-fusee 56-hour movement has decorative tool work to the plates, carries the Daini-Seiko-sha trade mark stamp, is numbered ‘V-031’, has finely cut and finished wheelwork, is wound out the bottom and has shaped pillars affixed by screws. The bimetallic balance wheel has adjustable cylindrical weights for temperature compensation, timing screws, an elinvar helical balance spring and is set in jewels top and bottom. The original detent and escape wheel are set adjacent to break circuit work used for rating. The whole is housed in a gimballed brass tub that is locked by a screwed swing latch.
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