
Pocket Watches · Pocket watch
Gold Pair Cased 15 Second Rack Lever by Tobias, 1826
- Maker / attribution
- Tobias (maker)
- Date
- 1826 (hallmarked Chester)
- Historical period
- Precision & Scientific Horology (1750 – 1850)
- Country of origin
- Unrecorded in source
- Object type
- Pocket watch
- Materials / technique
- gold
- Stock no.
- A1306
- Credit line
- Dealer listing, Pieces of Time (A1306)
- Catalogue title (original)
- Gold Pair Cased 15 Second Rack Lever by Tobias (English)
View the source record (dealer listing) ↗ (opens another website in a new tab)Suggest a correction
Record summary
Catalogued by Pieces of Time (dealer), London (stock number A1306), this is a pocket watch by Tobias, dated 1826 (hallmarked Chester). The Atlas places it in the Precision & Scientific Horology period (1750 – 1850) of its Pocket Watches collection. Materials and techniques recorded by the source: gold. The record is illustrated with 5 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 — Pieces of Time
An early 19 th Century English rack lever by Tobias with 15 seconds subsidiary in gold pair cases. Full plate gilt keywind fusee movement with gilt dust cover pierced for the table of the cock. Chased and engraved cock, diamond endstone in a blue steel setting, marked "Patent" on the table. Blue steel Bosley regulator. Plain three arm polished steel balance with blue steel spiral hairspring. Rack lever escapement with adjustable slides to the lever pivots. Off white enamel dial, subsidiary seconds marked to fifteen seconds, the hand mounted on the escape wheel arbor rotating four times every minute. Roman numerals, blue steel seconds hand, gilt hands. Matching 18 carat gold pair cases, gold oval pendant and bow. Maker’s mark "TH & Co" and number corresponding to that on the movement.
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
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:Verge escapementVerge escapement
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