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Gold 18th century verge plunge quarter repeating pair cased pocket watch by Martin Jackson, London — view 1 of 1
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Pocket Watches · Pocket watch

Gold 18th century verge plunge quarter repeating pair cased pocket watch by Martin Jackson, London

DocumentedDocumented from an auction catalogue; attribution as stated by the auction house.
Maker / attribution
Martin Jackson (maker)
Date
18th century
Country of origin
England
Place
London
Object type
Pocket watch
Materials / technique
gold
Dimensions
Diameter 55 mm
Lot
Sale 11, lot 354
Credit line
Auction lot record: lot 354, The Watch Auction, Gardiner Houlgate (21st October 2020)
Catalogue title (original)
Martin Jackson, London - fine gold 18th century verge plunge quarter repeating pair cased pocket watch, the fusee movement signed Martin Jackson, London, with pierced engraved balance cock with mask a (English)

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Record summary

Catalogued by Gardiner Houlgate (auction house), Corsham (lot Sale 11, lot 354), this is a pocket watch by Martin Jackson, made in London, England, dated 18th century. The Atlas places it in the Early Modern Horology period (1600 – 1750) of its Pocket Watches collection. Materials and techniques recorded by the source: gold. Recorded dimensions: Diameter 55 mm. The record is illustrated with 1 photograph.

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

Lot description — Gardiner Houlgate

Martin Jackson, London - fine gold 18th century verge plunge quarter repeating pair cased pocket watch, the fusee movement signed Martin Jackson, London, with pierced engraved balance cock with mask and diamond endstone, flat steel three arm balance, silvered regulating disc, cylindrical baluster pillars and stop/work at the five position with hammers striking the bell to the case, enamel dial with Roman numerals, outer Arabic five minute divisions and minute track, blued steel beetle and poker hands, pierced and engraved inner case within a pierced outer cased engraved with busts and masks and initials cartouche to the centre, case maker 'SI IL', 164.6gm, 55mm

Historical context

Early Modern Horology (1600 – 1750)

Huygens' pendulum and balance spring transform accuracy; English makers develop the anchor and deadbeat escapements.

The balance spring (c. 1675) improved watches dramatically and introduced the minute hand. English pair-cased verge watches with pierced balance cocks and French oignons were typical; enamel painting at Blois and Geneva, and the repeating watch (1680s), made watches objects of great refinement.

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

Atlas type guide

Verge and pair-cased watches

After Christiaan Huygens and Robert Hooke applied the balance spring around 1675, the verge watch became a reasonably reliable timekeeper and the minute hand became standard. Through the eighteenth century the typical English watch was a pair-cased verge: a fusee movement with a pierced, engraved balance cock, housed in an inner case and a separate protective outer case, often of repoussé gold, shagreen, tortoiseshell or enamel.

French watches of the same period were thicker 'oignons', later replaced by elegant thinner watches following Jean-Antoine Lépine's bar-bridge calibre of c. 1770. Dutch, Swiss and German makers supplied international markets, and verge watches were made until the mid-nineteenth century as cheaper alternatives to the cylinder and lever.

What to look for

  • The pierced balance cock on the backplate: winged (continental) or with a foot (English); its style dates the watch.
  • Fusee and chain visible through the movement; key winding through the dial (early) or case back.
  • Hallmarks inside English silver or gold cases, which give a date letter.
  • Maker's name and serial number engraved on the backplate; watch papers inside outer cases.
  • Enamel dials (after c. 1720) versus earlier champlevé metal dials.

Dating clues

  • Champlevé dials: c. 1680–1730; white enamel dials thereafter.
  • English case hallmarks give the year of assay to within a year.
  • Verge watches persisted in cheap production until c. 1850.

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:Balance spring (hairspring)Verge escapement

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