Omega Constellation 14381.11 SC

OMEGA Constellation chronometer wristwatch in steel reference 14381/11SC, self winding, Switzerland around 1961, screwed down case back with central observatory gold badge abraded, original glass and winding crown, silvered dial with raised silvered indices, silvered Dauphine-hands, copper coloured movement calibre 551, 24 jewels, adjusted in 5 positions, swan´s neck regulateur, diameter approx. 34,5 mm, condition 2-3