A Phase 3 Ebony And Silver Striking Spring Clock With Pull-Quarter Repeat
Case: Case of ebony on oak with gilt foliate-tied handle to invertedd-bell top, arched glazed side panels within moulded frames. The rectangular front door with gilt scroll escutcheons; on ebony moulded block feet.
Dial: Signed Geo: Graham, London on a fitted gilt plate between the subsidiaries covering an inverted signature. 5.5 by 6.5 inch rectangular, gilded-brass dial with four latched feet, matted centre, mock pendulum and pinhole adjusted date aperture. Silvered chapter with lozenge half-hour marks and subsidiary regulation and Strike/Not strike rings with silver ornate cherub's head spandrels, the lower two with double screws, blued-steel hands.
Duration: 8 days.
Movement: 5 by 7 inch plates with seven latched baluster pillars and twin fusees, going train with pivoted verge escapement and spring-suspended lenticular pendulum, rise and fall lever adjustement through the dial. Strike train governed by rack-and-snail sounding the hours on the larger bell, Tompion's pull-quarter system repeating the quarters on the smaller bell via twin cocked interlocking levers on plain backplate, signed Geo: Graham, LONDON.
Escapement: Pivoted verge.
Strike Type: Hour striking with Tompion's pull-quarter repeat on twin cocked levers.
Provenance: Christie's 3rd July 1991, lot 291 (42,000 GBP).
Exhibited: London, Garrard's The Crown Jewellers, English Master Clockmakers, 1992, on loan.
Comments: The lowest numbered Graham spring clock signed on otherwise plain backplate. J Evans notes the orientation and location of the under-signature relate to that of a Graham wheel barometer (shown below).