1930s steel rectangular vintage Omega watch

A rare large steel rectangular vintage Omega wrist watch. The case measures 25 x 38 mm (including lugs). The case, with decorative flared sides, is signed Omega, Acier Staybrite and numbered. The movement is signed Omega, Swiss Made, with 15 jewels and numbered. The silvered dial has fancy black Arabic numerals with 24 hour indicators in the outside minute track and subsidiary seconds dial. The dial is signed Omega above the centre.