• 0Shopping Cart
  • Watches
  • Chronometers
  • Books, etc
  • Tools
  • Search
  • Menu Menu
  • Search
  • what’s new
  • Watches
  • Chronometers
  • Books, etc
  • Tools
  • Account details

Thos MOSS, Ludgate Street, London. No 8460

Fine Liverpool-style London finished duplex watch, in crisply engraved case.

Item 99959 Categories: Pocket Watches, Watches

£2,995.00

18ct yellow gold barrel edge case with engine turned rear cover and deeply engraved ‘rose’ bezels hallmarked London 1822, casemaker RM (Robert Mansir, Clerkenwell). Capped fullplate fusee movement with cap jewels on balance (diamond) and escape, the cap stamped LxR, as often seen in the best London work of the period. Duplex escapement retaining its ruby roller. Steel balance, spiral balance-spring. Lovely engine-turned 18ct yellow gold dial with pink gold Roman numerals and matching pink gold hands. 52.5 mm diameter.

Thomas Moss, then at 24 Ludgate St, a well known London watch and clock maker.

NB: The escapement used in the watch is the standard English single-wheel variant of Tyrer’s Patent No 1311 of 1782. The Duplex escapement, as it has come to be known, was initially fitted with two escape wheels, one for locking and one for impulse. Very few of these English double escape wheel watches are known (later repairs utilising two lever escape wheels have confused certain writers), and it seems that English makers took to the single wheel arrangement almost immediately, as used by Moss in this movement. It was considered at the time as being as the best escapement for pocket wear, only losing out to the detached lever escapement due to the effect of wear caused by the roller acting on the escape’s locking teeth.

In fine original condition throughout, just lacking the original markings in the seconds ring, no doubt removed when being repeatedly cleaned over the years. The still crisp case showing just how beautiful this new style was, most surviving examples sadly showing the effects of much wear – bezels like this are usually either engraved with ‘roses’ or ‘shells.’ Serviced and guaranteed.

Item available

  • Description

Description

18ct yellow gold barrel edge case with engine turned rear cover and deeply engraved ‘rose’ bezels hallmarked London 1822, casemaker RM (Robert Mansir, Clerkenwell). Capped fullplate fusee movement with cap jewels on balance (diamond) and escape, the cap stamped LxR, as often seen in the best London work of the period. Duplex escapement retaining its ruby roller. Steel balance, spiral balance-spring. Lovely engine-turned 18ct yellow gold dial with pink gold Roman numerals and matching pink gold hands. 52.5 mm diameter.

Thomas Moss, then at 24 Ludgate St, a well known London watch and clock maker.

NB: The escapement used in the watch is the standard English single-wheel variant of Tyrer’s Patent No 1311 of 1782. The Duplex escapement, as it has come to be known, was initially fitted with two escape wheels, one for locking and one for impulse. Very few of these English double escape wheel watches are known (later repairs utilising two lever escape wheels have confused certain writers), and it seems that English makers took to the single wheel arrangement almost immediately, as used by Moss in this movement. It was considered at the time as being as the best escapement for pocket wear, only losing out to the detached lever escapement due to the effect of wear caused by the roller acting on the escape’s locking teeth.

In fine original condition throughout, just lacking the original markings in the seconds ring, no doubt removed when being repeatedly cleaned over the years. The still crisp case showing just how beautiful this new style was, most surviving examples sadly showing the effects of much wear – bezels like this are usually either engraved with ‘roses’ or ‘shells.’ Serviced and guaranteed.

Related products

  • English Watch Co Ltd, No 87413, for H SAMUEL, Manchester

    £75.00
    Discover More
  • T J WILLIS – new/old stock

    £15.00
    Discover More
  • Jas ERSKINE, Aberdeen. No 64

    £175.00
    Discover More
  • MUDGE – David Penney escapement print

    £50.00
    Discover More

David Penney’s Antique Watch Store + New

  • I have been involved in antiquarian horology for fifty years, first as an illustrator and subsequently as a writer, dealer and consultant to various private collectors and museums worldwide.
  • I trust you will find something of interest among the box chronometers, watches and related material, and I will continue to offer only those that are in the best condition and/or that are the most rare and unusual, David Penney

The Catalogue

  • What’s new
  • Watches
  • Chronometers
  • Books, etc
  • Tools

Antique Watches

  • About David Penney
  • Thinking of SELLING
  • Thinking of BUYING
  • Contact ME
  • Shipping and Insurance
  • Guarantee
  • Your Account

Legal Notices

  • Privacy and Cookies
  • Copyright Notice
Swiss rough movement – probably Le COULTREJames HODDELL & Co, No 53446, for T KIRKNESS, Scarborough
Scroll to top