Royal Flying Corps MK.V aircraft cockpit watch made by the Swiss company, Doxa, and used by the RFC between 1916-1917.

The RFC cockpit watch with a solid nickel case, snap-on back and bezel. Hinged inner dust cover. Nickel bow (later addition in order that watch could be worn on the person). Inside case back signed, Doxa and 'metale Argente' (silver metal).

British military markings to the back include  War Department arrow and  letter "A" (Aviation). In addition, this timepiece has the added unit serial numbers engraved to both sides of the  WD markings, 'STH - 2614'. Timepiece diameter 52 mm. 

The watch dial is typically in matt black enamel with subsidiary seconds. Bold white numerals and markers, along with corresponding white metal hands. Dial marked: "30 Hour, Non Luminous, Mk V" and "B.E.10555." The dial is in particularly clear condition with no damage to the white numbers (hairline cracks and a couple of slight chips to the outer dial edge).

High quality, nickel plated, 19 ligne, 15 jewel movement. Signed Doxa with fine Geneva Stripes to the top bridges. Bi-metallic compensation balance. Breguet overcoil hair spring. This timepiece is in running condition (no warranty implied).

Note: The RFC pilot was responsible for the aircraft cockpit watch. The timepice would be 'signed for' by the pilot priot to a  mission, and returned thereafter. Watches were mounted to aircraft dashboard by a variety of different means.