Transitional 3/4 plate watch (unrestored)
John Wood, Liverpool, circa 1823. Transitional 3/4 plate watches are full plate watches with the balance sunk below the surface of the plate and the cock flush with it, making a much thinner watch. All except one that I know of (only 11 including this one) have Massey escapements and are definitely dated between 1823 and 1830.This watch is very rare because it has centre sweep seconds; most have standard sub-seconds.
Horological Books
Revised Watkins "Watchmaking and the American System of Manufacture", 2009
NEW Watkins "Mainspring Gauges and the Dennison Combined Gauge", 2009
Richard Watkins "Mechanical Watches" (2 vols), 2004
Repeater Videos
Anon "Some notes on P.F. Ingold", 1932
Berner and Audetat "Pierre Frederic Ingold 1787-1878", 1962
REPRINTED Berthoud and Auch "How to Make a Verge Watch", 1763 and 1827
Borsendorff "History of a Watch", 1869
Buffat "History and Design of the Roskopf Watch", 1914
Camus "A Treatise on the Teeth of Wheels", 1837
Crespe "Essay on Repeater Watches", 1804
David "American and Swiss Watchmaking in 1876"
Favre-Perret "Report on the Philadelphia Exhibition 1876"
Francillon "History of Longines", 1947
Graupmann "Finishing of the Watch Case", 1910
Grossmann "The Construction of a Simple but Mechanically Perfect Watch", 1880
Hillmann "The Keyeless Mechanism", ca1920
Japy "Patents for watchmaking machines", 1799
Lalande "Diary of a trip to England 1763"