Strömgren Og Olsen

A RARE AND INTERESTING GOLD OPEN-FACED ASTRONOMICAL DECK WATCH WITH INDICATIONS FOR SIDEREAL TIME AND EQUATION OF TIME CIRCA 1920, NO.557

• Movement: gilded unsigned, lever escapement, jewelled to the centre, wolf's tooth winding, bi-metallic compensation, swan-neck regulation, plain polished gold cuvette
• Dial: white enamel, outer ring for minutes and equation of time with Arabic five-minute markers, three sunken subsidiary dials for mean-time hours, sidereal 24-hours and subsidiary seconds, two central hands in gold with sun terminal for mean-time minutes and blued steel Breguet hand for sidereal minutes, marked patent and signed and numbered Strömgren Og Olsen, no. 557
• Case: 18ct gold case, polished covers, gold pendant and bow
diameter 60mm

Provenance:
Sotheby's New York, Fine Watches from the Atwood Collection, 11 December 1986, lot 352