7 December 2005
A walnut month-going longcase clock with equation of time and perpetual calendar
Case circa 1740, movement and dial 20th Century
The line-inlaid case on double skirted plinth, breakarch trunk door, flat top hood with later gilt-wood columns, the dial spuriously signed Joseph Eayre St. Neots on a silvered disc above the silvered Roman and Arabic chapter ring with blued steel hands - the solar hand with brass sunburst, the matted centre with seconds and calendar aperture, urn-and-eagle spandrels, the arch with curved and chamfered lunette displaying the full calendar mechanism indicating the date, month, number of days in each month and the sign of the zodiac, the equation and Sun too Sloe/Sun too Fast, steel levers the the base of the dial, the right lever operating the bolt-and-shutter for the going train; the left lever pulling aside the shutter to reveal the calendar adjustment square, the reverse of the dial posted with the perpetual calendar wheelwork, the substantial movement with arched brass plates secured by five ring-turned pillars latched to the front plate, anchor escapement with bolt-and-shutter, the calendar wheel being driven from the motionwork on the left side of the plates via contrate and worm-and-wheel linkeage, the equation cam mounted on the backplate on an extension to the calendar wheel arbor, the cam arm linked to the equation hand on the dial via a counter-balanced system of planetary wheels on the front plate above the motionwork
7ft. 6in. (227cm.) high
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The perpetual calendar mechanism is based on the design invented by The Reverend Ludlum. This system is fully described in the Horological Journal The Rev. Ludlam's Perpetual Datework, January, 1990, by John Wilding F.B.H.I.
No VAT will be charged on the hammer price, but VAT at 17.5% will be added to the buyer's premium, which is invoiced on a VAT inclusive basis.
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