Omega

cal. 2500 automatic movement with co-axial chronometer and helium escape valve, fully jewelled, black dial with luminous indexes and hands, sweep centre seconds, aperture for date at 4, with orange unidirectional rotating bezel with anti-reflective sapphire crystal, with stainless steel bracelet

Measurements:

diameter 44 mm (case)

• EStimate $2,500 - $3,500
• sold $3,360 Incl BP