9,775 CHF
Strômgren 0g Olsen, No. 668, Swiss made under a Danish patent, circa 1910, in original mahoganny fitted box. Rare and fine silver patented observatory pocket chronometer with mean and sidereal time. Four body, massive, "bassine et filets", polished. Silver cuvette. White enamel with outer Arabic minute ring, subsidiary small Roman chapter for mean time hours and symetrical Arabic sidereal 24 hours, subsidiary seconds below. Blued steel Breguet mean time minute hand and gold "star" sidereal minute hand. 20-, gilt brass by LeCoultre, 19 jewels, straight line lever escapement, brass-invar balance of Guillaume pattern, Breguet balance spring with swan neck micrometric index. Signed on the dial. In very good condition. Diam. 60 mm.
Auctioneer:
Antiquorum
Date:
1993-04-25