Important Collectors Wristwatches Po...
Geneva, Hotel Des Bergues, Oct 21, 1995
LOT 261
John S. Godman St. Albans, circa 1974 Unusual precision regulator based on Riefler's patent.
CHF 30,000 - 35,000
C. Cylindrical grey painted steel, annular mottled grey wall bracket, glass dome. D. Circular regulator type, silvered, Arabic numerals, hour dial for 24 hours. M. Brass and steel, plated rectangular, plain pillars; Riefler's double wheel escapement in which impulse is given via the suspension spring which is retensioned by the escapement at each swing of the pendulum; Riefler's remontoire weight drive in which an arm lifted by an electric coil continually resets a rectangular weight which supplies power to the train; invar rod pendulum ( Riefler's 'K' type) with brass weight and bottom adjustment, oscillation in partial vacum created inside the cylinder. Dim. 136 x 30 cm.
