7,080 CHF
"Quantième Semi-Perpetuel for The Islamic Market" B. Haas Jeune, "Quantième Semi- Perpetuel, Mahometan Système Billeter". Made for the Islamic market, circa 1875. Very fine, rare and unusual, gilt brass, 8-day going, 4- glass mantel clock with hour and half-hour striking and "semi" perpetual calendar with indication for Islamic festivals. Gilt brass, stepped entablature with dentilled frieze, sides and doors with bevelled glass, two out-set fluted corinthian pillars with foliate bases, molded and stepped base with four molded block feet. 10cm., gilt brass circular Paris-type, going barrels for both trains, Brocot escapement, spring suspension, crutch with micrometer beat adjustment, brass bob pendulum, outside countwheel striking on a bell, the striking train driving the calendar mechanism at each strike by three extra wheels mountedon the backplate and connected to the calendar mecahnism mounted on a rectangular plate below the movement. Dial signed. Dim. 38 x 22 x 14.5 cm. Property of a French Gentleman Notes The present clock is very unusual in having what is described as a "semi perpetual" calendar with automatic indications for the Islamic festivals. The mechanism is driven by the striking train and through a system of click wheels, there is a hand for the date moving every 24-hours and a hand for the Islamic festivals moving after the appropriate number of days has elapsed. This is an ingenious mechanism and must have been invented purely for clocks with t
Auctioneer:
Antiquorum
Date:
2007-05-13
