Exceptionally rare quartz marine chronometer produced by Spe...

Exceptionally rare quartz marine chronometer produced by Sperry Gyroscope Limited of Stonehouse, Gloucestershire, circa late 1950s, the 4” silvered dial with elegant blued steel hands in its original bronzed coloured enamelled metal case, 10.5” high, 10.5” wide ** An extraordinary, historical development representing the dawn of solid state electronic timekeeping. Engineered by the legendary firm Sperry Gyroscope Co., this ultra high frequency 102.4 kHz quartz crystal chronometer utilises pioneering germanium transistor circuitry to provide the oscillator, frequency divider and clock driver functions are required to operate the 4” silvered dial with elegant blued steel hands. These hands are driven by a 2 Hz stepping motor, moving the centre second hand in half second steps ** Believed to be the only known cased production example ** From the David Read Collection

Estimación:€1,767.6

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