9
9
William Bertram, London
A FINE AND LARGE SILVER PAIR CASED VERGE WATCH CIRCA 1700, NO. 555
Estimate
4,0006,000
LOT SOLD. 5,000 GBP
JUMP TO LOT
9
William Bertram, London
A FINE AND LARGE SILVER PAIR CASED VERGE WATCH CIRCA 1700, NO. 555
Estimate
4,0006,000
LOT SOLD. 5,000 GBP
JUMP TO LOT

Details & Cataloguing

Celebration of the English Watch, Part III, The Genius of Thomas Tompion

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London

William Bertram, London
A FINE AND LARGE SILVER PAIR CASED VERGE WATCH CIRCA 1700, NO. 555
Movement: gilded full plate, verge escapement, decoratively pierced and engraved masked balance cock decorated with a bird, foliage and a basket of fruit, silver regulator plate with blued steel centre and decorative gilded pointer in the form of a hand, fusee and chain, tulip pillars, signed Will Bertram, London
Dial: silver champlevé, Roman numerals, fleur-de-lys half hour divisions, outer Arabic minute ring, gilded outer border, blued steel tulip and poker hands, elaborate central cartouches, signed Bertram, London  
Cases: plain inner case, the back with winding aperture, split bezel for glass retention, plain outer case, both cases with maker's mark WB incuse, probably for William Bertram, inner case numbered 555
diameter of inner case 51 mm, outer case 59 mm
Read Condition Report Read Condition Report

Literature

Terence Camerer Cuss, The English Watch 1585-1970, 2009, p. 127, pl. 62

Catalogue Note

This unusually large watch has an especially interesting movement. Whilst the escape wheel has a normal six-leaf pinion, the train has one more wheel than usual. The train’s wheels have a high tooth count and the pinions have twelve leaves. Rather than increasing the running time of the piece, this arrangement should result in a better transmission of power, thereby creating a more reliable watch.

 

William Bertram (also Bartram) was born c. 1663. Initially apprenticed to Samuel Horne, he transferred to the case maker Samuel Bowtell (see lot 6 in this sale) after June 1681, and was freed in 1684. Interestingly, a Clockmakers’ Company minute of 1708 records that Bertram was excused stewardship of the Clockmakers’ Company on account of being “at present busy on the Queen’s business”.

Celebration of the English Watch, Part III, The Genius of Thomas Tompion

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London