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Details & Cataloguing

Masterworks of Time: Adolf Lange, The Golden Era of Glashütte

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Geneva

Josef Nicolaus, Senftenberg in Böhmen
A SILVER OPEN-FACED CHRONOMETER WATCH WITH SIDEREAL TIME IN ORIGINAL MAHOGANY DECK BOX NO. 27, CIRCA 1900
Movement: gilded three-quarter plate, Earnshaw type spring-detent escapement, free-sprung bi-metallic compensation balance with gold timing weights, blued steel helical spring, brass collar for winding square, gilt-metal cuvette with aperture for winding, movement and cuvette signed and numbered Jos. Nicolaus Senftenberg in Böhmen, no.27
Dial: white enamel, outer Arabic minute ring with central blued steel hand, two subsidiary dials for constant seconds and 24-hour sidereal time, blued steel hands, signed Jos. Nicolaus Senftenberg in Böhmen, no.27 and additionally marked Stern Zeit (Sidereal Time)
Case: plain silver case, case maker's mark FS beneath a crown incuse
Deck Box: two-tier mahogany deck box with blue velvet lined holder, the lock with key, lacking numbered roundel plaque to lid 

diameter 59mm
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Provenance

Time Museum, Rockford Illinois, inventory no.258
Sotheby's New York, Masterpieces from the Time Museum, Part II, 19 June 2002, lot 67

Literature

Anthony Randall, The Time Museum Catalogue of Marine Chronometers, Rockford, 1992, cat. no. 124, p.267, figs. 162 a & b
Heinrich Von Lunardi, Chronik über den Uhrmacher und Chronometerhersteller Josef Nicolaus, Uhren Journal für Sammler Klassischer Zeitmesser, May 1994, pp. 29-30, figs. 2 a & b

Catalogue Note

Josef Nicolaus was born in 1855 in Senftenberg Bohemia where he later studied watchmaking before moving to work in Switzerland.

The design of the movement is quite advanced, as evidenced by the vertically hanging detent, which reduces the positional effects of gravity.  

Masterworks of Time: Adolf Lange, The Golden Era of Glashütte

|
Geneva