- Museum number
Gun-metal cased lever watch with 'wandering-hour dial.
Roskopf style movement.
Pin-pallet lever escapement.
Keyless winding and rocking-bar hand-set.
Silver dial with a sector aperture to reveal wandering hours; the minutes on a gilt disc below; in the lower part a portrait of Pope Pius X.
Gun metal case with glazed snap-on bezel, hinged back and hinged cuvette.
- Production date
Diameter: 54 millimetres (case)
Diameter: 41 millimetres (dial)
Diameter: 23.20 millimetres (portrait)
Thickness: 15.10 millimetres
- Curator's comments
Giuseppe Melchiorre Sarto (1835 – 1914) served as Pope Saint Pius X from 1903 to 1914. From the style of the watch, it is likely that it was a commemorative piece to mark his death in 1914.
The inscription on the back of the movement suggests that the watch was intended for retail on either Spain or Portugal.
Comment from Richard Good, Catalogue of Watches in the British Museum. Vol. V (Unpublished manuscript)
Switzerland, c. 1910.
Keyless watch, the movement with wandering hour indication and a pin pallet lever escapement.
Case: A gun-metal three part case with snap on bezel a hinged back and a hinged inner cover.
Dial and Hands: A brass mask silvered and with floral engraving. There is a large circular hole in the mask displaying the inserted picture of a Pope?
Beneath this are the silvered hour indication pieces mounted on a three armed carrier which is in turn mounted on the centre spindle. These hour indication pieces have Arabic numerals. There is a segment minute circle finished gilt with the time indicated by the passage of the hour numeral against the segment. Two silvered decorative pieces are situated around the minute marks which are numbered at every five from 0 - 60. All the marks and numerals are painted in black.
Ebauche Marks: None
A brass front plate with nickel plated components on it, namely the barrel train and keyless bridge, the escape wheel and pallet cocks and the balance cock. A bridge for the barrel ratchet wheel. The main plate supported by three turned pillars and secured by screws. A bridge set on the inside of the front plate carries the spider.
A Roskopf layout
Barrel and Mainspring: The going barrel has a recessed cover, barrel inside diameter 22.0 mm., inside height 2.4 mm.
Mainspring height 2.4 mm., thickness 0.23 mm.
Arbor: Diameter 5.4 mm., snailed.
Hooking: Hook pressed in from the barrel wall.
Train: The brass wheels with five crossings, escape wheel with four.
Jewelled: One jewel only, this being an endstone in the balance cock.
Escapement: A pin pallet escapement with an obtuse angled layout. Effectively a double roller with a brass impulse finger. A brass lever with steel pins.
An equal impulse escapement.
Number of teeth embraced 3 ½.
Balance and Spring: A brass three arm plain balance. Balance diameter 15.5 mm., thickness 0.5 mm.
The flat spiral blued steel spring with 14 turns.
Means of Regulation: An index on the balance cock with a divided scale and 'AVANCE' and 'RETARD' engraved on the cock.
Train Counts and Beat Rate:
Great wheel (barrel) 128 (this revolves in four hours).
Second wheel 84 pinion 8
Third wheel 60 pinion 7
Escape wheel 18 pinion 6
Wheel carrying the spider 54 (This revolves in three hours)
Beat Rate: 17,280
Winding system: Side set positive keyless work.
Dimensions: Case diameter 53.9 mm., height 15.5 mm.
Movement diameter 44.0 mm., height 8.2 mm.
Provenance: Formerly in the Ilbert collection.
Note: This watch is illustrated on p.79 of 'Pin Lever Watches'. On page 94 it is shown in sketch form and given the source as 'Cattin et Christian' (Oris).
- Not on display
Latest: 3 (2017)
3 (Apr 2010)
- Acquisition date
- Britain, Europe and Prehistory
- Registration number
- Additional IDs
Previous owner/ex-collection number: CAI.0968 (Ilbert Collection)
Previous owner/ex-collection number: Q29 (Ilbert Ledger)