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18ct yellow gold Jefferys & Jones enamel, diamond and pearl set open face pocket watch, 1780 — view 1 of 3
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Pocket Watches · Pocket watch

18ct yellow gold Jefferys & Jones enamel, diamond and pearl set open face pocket watch, 1780

DocumentedDocumented from a dealer's listing; attribution and date as stated by the dealer.
Maker / attribution
Jefferys & Jones (maker)
Date
1780
Country of origin
Unrecorded in source
Object type
Pocket watch
Materials / technique
yellow gold
Dimensions
Case 52 mm
Stock no.
G1313
Credit line
Dealer listing, Somlo Antiques (G1313)
Catalogue title (original)
18ct yellow gold Jefferys & Jones enamel, diamond and pearl set open face pocket watch. Made 1780 (English)

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Record summary

Catalogued by Somlo Antiques (dealer), London (stock number G1313), this is a pocket watch by Jefferys & Jones, dated 1780. The Atlas places it in the Precision & Scientific Horology period (1750 – 1850) of its Pocket Watches collection. Materials and techniques recorded by the source: yellow gold. Recorded dimensions: Case 52 mm. The record is illustrated with 3 photographs.

Assembled from the source record's structured fields. Dates and attributions are given as the source states them; where a field is missing the Atlas leaves it blank rather than estimating.

Catalogue description

Dealer description — Somlo Antiques

A firm of royal goldsmiths. Jefferys & Jones (later Jefferys & Gilbert) were a prominent firm of Royal goldsmiths, jewellers and sword retailers of 20 Cockspur Street, London from 1765-1828 Brand: Jefferys & Jones Made: c.1780 Model: Open face Reference: N/A Calibre: N/A Movement: Manual Material: 18ct yellow gold Features/complications: Open face, gold, enamel and diamond set case with pearls around the circumference Dial: White enamel dial with outer minute track featuring black Arabic hour markers with diamond set beetle hands and winding aperture at 6 o'clock Case dimensions: Diameter 52 mm | Thickness 22 mm Bracelet/strap: N/A Accessories: N/A SKU: 1313

Historical context

Precision & Scientific Horology (1750 – 1850)

Harrison solves longitude; Mudge invents the lever; Breguet's Paris workshop defines the modern watch.

From 1750 to 1850 the watch became a precision instrument. Mudge's lever escapement, the cylinder escapement, Lépine's thin bar calibre, Breguet's innovations (overcoil, tourbillon, perpétuelle) and the pocket chronometer of Arnold and Earnshaw all date from this period, while verge watches remained common in cheaper production.

Read the period in the timelineMore pocket watches from this periodEarlier: Early Modern Horology

Atlas type guide

Hunter, half-hunter and open-face watches

In the nineteenth century the pocket watch case settled into a few standard forms. The hunter (French savonnette) has a hinged front lid protecting the crystal — reputedly for riders who could not risk broken glass — and is opened by pressing the crown or a push-piece. The half-hunter has a small window in the lid so the hands can be read when closed. The open-face (lépine) watch has no front cover, with the crown at 12; hunters normally carry the crown at 3.

Case types also changed with winding: key-wound watches gave way to keyless (stem-wound) mechanisms after Adrien Philippe's and others' designs of the 1840s, with pendant setting or lever setting.

What to look for

  • Crown position relative to the seconds dial: at 3 for hunters, at 12 for open-face watches.
  • Spring-loaded front cover with a push-piece in the pendant.
  • Half-hunter chapter ring enamelled on the lid.
  • Key holes in the inner dome (cuvette) versus keyless winding.

Dating clues

  • Keyless winding spread after c. 1850 and became standard by c. 1890.
  • English hallmarks inside gold and silver cases give the year of assay.

General guidance written by the Atlas editors about this kind of object. It is not a statement about this particular piece; for that, rely on the source record above and on physical examination.

Read next:Detached lever escapement

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