The Hanover Tompion
Dial: 8 by 11.5 inch breakarch dial signed Tho Tompion London on a plaque covering THOTOMPION + EDW BANGER LONDINI FECIT, with engraved, gilt matted centre with mock pendulum aperture, double-screwed Minerva mask-and-foliage spandrels, standard silvered chapter-ring with silvered subsidiary dials, the left for pendulum regulation, the right engraved Son 6/Sil 6 Son 1/Sil 1. Sectoral apertures in the arch for weekday with appropriate deity and the date of the month.
Duration: 8 days.
Movement: Triple fusee latched seven-pillar movement with 8 by 9.5 inch plates, pendulum suspended from brass regulation bar, quarters striking on one or six bells, hours on another bell. Trip quarter repeat via blued-steel double-cocked interconnecting levers on the profusely foliate engraved backplate signed THO TOMPION + EDW BANGER LONDINIFECIT in an octagon (G. 195) and punch-numbered 417.
Escapement: Pivoted verge.
Strike Type: Three-train full grande sonnerie with trip repeat.
Provenance: Queen Anne. George I, then given to his mistress, Ehrengard von der Schulenbury; left on her death in 1743 to their natural daughter, Petronella, wife of the famed 4th Earl of Chesterfield, and at her death in 1788 specifically left to her cousin, Reichsgraf Jebhard von der Schulenburg, of Wolfsburg. Thence by family descent at Schloss Wolfsburg and sold Sotheby's London, 19th June 2003, lot 41.
R Garnier (advert, Antiquarian Horology, September 2003, p. 479).
Literature: Evans, Carter and Wright, Thomas Tompion 300 Years, p. 404.
Comments: This is the second of the series of four turtleshell grande sonnerie spring clocks, the front plate scribed by Bullock (journeyman to George Graham) in the 1740's, presumably on cleaning it following lady Chesterfield's inheritance.