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English fusee Duplex pocket watch movement by Thomas Moss

ProbableCredible evidence exists but classification is not fully established.

Record status

Individual type · partial

Period

c1835

This antique English horological item is a gilt full plate fusee pocket watch movement dating to circa 1835. Made by Thomas Moss of Ludgate Street, London, and numbered 5139, the movement features a Duplex escapement paired with a brass escape wheel.

It incorporates a wide three-arm steel balance, jewel settings, and an index regulator marked for Slow and Fast on an engraved balance cock. Measuring 46 mm by 13 mm, the mechanism is set up for key winding and setting. While the source notes an intact chain, it reports the balance is broken. The movement is accompanied by a white enamel dial with gold and gilt hands.

Evidence at a glance

Linked sources
1
Photograph views
1
Catalogue references
0

Counts describe this entry’s documentation, not authenticity, rarity or completeness. Photographs may show one specimen; check each caption and licence.

Technical characteristics

Type
Fusee duplex pocket watch movement
Balance
Wide steel 3-arm balance
Dimensions
46mm x 13mm
Escapement
Duplex escapement with brass escape wheel
Place recorded
United Kingdom
Maker Signature
Thos Moss, Ludgate Street, London 5139
Dealer Stock Code
ME77 (AB-126638)
Maker / attribution
Thos Moss
Plate Configuration
Gilt full plate fusee

Design

Visible features
• Engraved top plate reading 'Thos. Moss Ludgate Street LONDON 5139'. • Decoratively chased balance cock secured with a blued screw and fitted with an index regulator over an engraved 'SLOW / FAST' sector. • Prominent endstone setting at the balance pivot center. • Exposed portion of the steel balance wheel beneath the balance cock.
Identity and Provenance
This antique horological item is a gilt full-plate fusee pocket watch movement. It is signed on the plate, attributing the manufacture to Thomas Moss of Ludgate Street, London, with the serial number 5139. The item is categorized by the dealer as belonging to the Georgian period.
Condition and Components
The movement is reported to include a chain described as good, though the balance is noted as broken. The item is accompanied by a white enamel dial featuring gold and gilt hands. The dial lacks a sub-seconds hand and displays hairline fractures.
Technical Specifications
The movement features a Duplex escapement paired with a brass escape wheel. It is configured for key winding and key setting. The mechanism includes a wide, three-arm steel balance and is described as jewelled.

Identification

Reference
ME77 (AB-126638)
Serial number
5139
Source note
Facts transcribed from the linked source listing or collection record. Attribution and specifications are source-reported and have not been independently authenticated.

Catalogue references

No catalogue numbers recorded. Numbers are only published once transcribed from a verified edition of a standard catalogue — they are never inferred.

Research required

  • Research required: Dial side is described in the dealer listing text but not visible in the supplied photograph.
  • Research required: The dealer states that the balance is broken.
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