Catalogue record · Pocket watch
Swiss Minute-Repeating Pocket Watch
Needs researchA watch that tells the time by sound as well as by sight: a hammer-and-gong striking mechanism, fitted by specialist hands, that announces the hours, quarters and minutes on demand.
Overview
The minute repeater sounds the time to the nearest minute on demand, using a series of hammers striking gongs, activated by a slide or pusher set into the case band, so that the time can be read in the dark or without opening the case.
Fitting a repeating mechanism to a pocket watch movement is specialist work, historically carried out by a small number of complication specialists in Geneva and the Vallée de Joux, often working for several différent retail houses rather than under a single factory name.
History
Striking watches predate the minute repeater by more than a century, developing from earlier quarter-repeating and simpler striking mechanisms as makers refined the rack-and-snail system that reads off hours, quarters and minutes.
Because fitting a repeating train well requires a high degree of hand skill, minute repeaters remained a specialist product throughout the pocket-watch era, commanding the attention of Geneva's most skilled complication workshops even as ordinary lever watches moved toward factory production.
Design
A rack-and-snail reading mechanism, activated by the slide, sets the striking sequence for hours, quarters and minutes; hammers then strike gongs wrapped around the movement's edge.
The case must be constructed to let the gongs' sound escape clearly, which shapes case-back and band design in ways not seen on non-striking watches.
Movement
The repeating train is entirely separate from the going train and is wound by the action of the slide itself each time it is used, not by the crown.
Genuine minute-repeater servicing requires a watchmaker with specific complication experience; the striking train's timing and hammer adjustment are unforgiving of careless work.
Case
Case construction affects the repeater's sound; a case that has been heavily lined, refinished or fitted with a mismatched replacement back can noticeably dull the strike.
Hallmarks assist in dating and placing the case, which may not be by the same hand as the movement.
Dial and hands
A clear minute track assists a listener in checking the strike against the visible time, and its presence or absence is a useful descriptive detail.
Technical specifications
| Movement | Keyless lever movement with minute-repeating mechanism activated by a slide or pusher, striking hours, quarters and minutes |
|---|---|
| Movement type | Keyless lever movement with minute-repeating striking train |
| Escapement | Swiss lever escapement |
| Jewels | Typically 18 or more in genuine complicated-grade examples |
| Winding and setting | Keyless stem-wind, stem-set; the repeating train is wound separately by the slide's own action |
| Size | Larger than an ordinary pocket watch of the period, to accommodate the striking train and gongs |
| Power reserve | Approximately 30–40 hours for the going train; the striking train is powered afresh at each activation of the slide |
| Frequency | 18,000 vibrations per hour (2.5 Hz) in typical production |
| Accuracy | Timekeeping is secondary to the complication in this class; quality varies with the individual maker's skill in fitting the striking work |
| Complications | Minute repeater (striking hours, quarter-hours and minutes on demand); Running seconds in many examples |
| Complication | Minute repeater (hours, quarters, minutes) |
| Escapement | Swiss lever |
| Winding | Keyless stem-wind, stem-set; slide-wound striking train |
| Jewels | Typically 18 or more |
Identification
- A repeating slide set into the case band, distinct from a chronograph pusher, is the clearest external identification feature.
- Genuine complication-grade finishing on the striking components — visible where the movement can be examined — distinguishes serious work from later composite or heavily reworked examples.
Variations
- Combined with other complications, such as a chronograph or perpetual calendar, in the most elaborate examples from top complication workshops.
- Quality ranges from carefully fitted work by recognised Geneva specialists to lesser commercial striking watches; the two should not be assumed equivalent from external appearance alone.
Serial numbers and dating
- Where a recognised complication specialist's signature or number is present, published specialist references may assist attribution; much production is otherwise dated by case hallmark and construction alone.
Known examples and institutional holdings
- Held in specialist horological museum collections illustrating the history of striking watches, and in collections devoted specifically to complicated watchmaking.
Collecting
- A specialist field distinct from ordinary pocket-watch collecting; buyers should have the striking mechanism examined by a complication specialist before purchase.
- No prices are given here.
Restoration and conservation
- Requires a watchmaker with specific minute-repeater experience; do not entrust a striking movement to a general watchmaker unfamiliar with repeating trains.
- Movement work — cleaning, lubrication, mainspring replacement, pivot or jewel work — belongs with a qualified watchmaker. Conserve original parts; do not refinish dials or polish cases to remove honest wear.
Bibliography
- Specialist reference works on the history of repeating watches (consult current editions).
- Museum catalogues of complicated Swiss watchmaking.
Bibliographic entries are given only at the level we can support. Where an edition, publisher or ISBN is not confirmed, it is deliberately omitted rather than invented.
Related photographs
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No confidently matched photograph of this subject has been found yet. These photographs show a closely related record, and are not examples of the type described on this page.
Sources & references
- Specialist horological literature on striking and repeating mechanisms.
- Museum catalogues of complicated watches.
Where sources disagree, the disagreement is stated rather than resolved silently.