AN RAF ISSUE COCKPIT WATCH

the circular black dial with luminous 5 minute scale from 5-60 minutes and a0-12 jumping hour disc at 6 o'clock position, central white minute hand and running seconds hand, knurled winding crown at the 6 o'clock position, reset crown at the 1/2 & 9/10 o'clock position, matt black and chromed case, with rear bracket signed Mounting Plate 6B/4193 and signed 15055 6B/3822 133 HTL3. Case diameter 55mm

Although not signed as such, the markings suggest that this is a Heuer Monte Carlo cockpit stopwatch.

Watch is currently functioning but the jump hour is not resetting.