Pocket Watch - Grand Prix 1900

JimInOz

Firstly, let's forget the Grand Prix appellation, it was just a mark used by Omega on millions of pocket watches, and similar marks were also used by other watch companies at the time.

Some basic requirements to correctly identify an Omega pocket watch are:

Photographs to be in the correct orientation, i.e.:

For a Lépine (open face pocket watch where the crown is at 12 o'clock), the crown should be at the top.
For a Savonnette/Hunter (where the crown is at 3 o'clock), the crown should be at 90º.

This applies to both dial, case and movement shots.

Photos of the serial number should be clear and readable. The serial number may be on one of the bridges, or it may be on the plate under the dial.

Good clear photos of any stamps/hallmarks/makers marks on any part of the case.

The caliber number may be shown on the plate below the balance wheel, but not always shown on earlier movements.

To allow correct identification of the movement, a dimension across the movement where it sits in the case (not the total movement diameter or the case diameter) is required, e.g. 42.3mm.

From what I can see, the watch is a nice 18 carat gold Lépine, possibly with a 19''' movement with 15 jewels.

The case serial number dates the watch to approximately 1906.

The dial is white vitreous enamel with black "Paris" style Arabic hour markers and minute markers on the outer track. The sunken sub-seconds dial also uses the same numerals and the sub-seconds hand looks to be original. The main hour and minute hands are gold in what Omega refers to as "Louis XV" style. The Ω mark and the italicised "Omega" on the dial are correct for the period

It's a nice watch (with very minor damage), but I fear that the owner will lose money if she pays to get it serviced, she would be better selling it "as is" and letting the new owner attend to the service.