Lot Essay
The inside of the inner drum case has the date in black manuscript Sept 30th 1828.
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LOUIS BERTHOUD NO. 114, CIRCA 1810
Details
A French mahogany two-day marine chronometer with Arnold escapement
Louis Berthoud No. 114, Circa 1810
The white enamel dial of regulator format, signed Louis Berthoud Horger de la Marine No. 114, subsidiary hour dial (at XII) with Roman numerals, outer minutes dial with Arabic five minute intermarkers 60-5-10 et seque, the edge of the dial-plate inscribed No.114 Construite par Louis Berthoud, blued steel hands, full-plate movement with Arnold escapement the top plate inscribed the Escapemnent Ballance (sic) Spring by Arnold Construite par Louis Berthoud No. 114, Arnold bi-metallic balance with tangential screw format heat compensation screws, heavy gauge blued steel helical balance spring of six coils, Arnold spring detent with (replacement) jewelled locking stone, in inner brass drum container within (later) outer bowl and gimbal and (later) plain three-tier mahogany box with replaced top-lid, the middle section with inset rectangular unsigned bone plaque, bolt action locking arm assembly.
78 mm dial diam., box 160 mm sq.
Louis Berthoud No. 114, Circa 1810
The white enamel dial of regulator format, signed Louis Berthoud Horger de la Marine No. 114, subsidiary hour dial (at XII) with Roman numerals, outer minutes dial with Arabic five minute intermarkers 60-5-10 et seque, the edge of the dial-plate inscribed No.114 Construite par Louis Berthoud, blued steel hands, full-plate movement with Arnold escapement the top plate inscribed the Escapemnent Ballance (sic) Spring by Arnold Construite par Louis Berthoud No. 114, Arnold bi-metallic balance with tangential screw format heat compensation screws, heavy gauge blued steel helical balance spring of six coils, Arnold spring detent with (replacement) jewelled locking stone, in inner brass drum container within (later) outer bowl and gimbal and (later) plain three-tier mahogany box with replaced top-lid, the middle section with inset rectangular unsigned bone plaque, bolt action locking arm assembly.
78 mm dial diam., box 160 mm sq.