OMEGA Armbandchronograph Speedmaster sog. "Mark IV Professional", Schweiz um 1979, Automatik,

OMEGA Armbandchronograph Speedmaster sog. "Mark IV Professional", Schweiz um 1979, Automatik, Ref. 176.0012, massives Edelstahl- Geh. inkl. orig. Gliederband m. Faltschl., Boden m. Seamaster-Logo verschr., Anz. v. Std., Min., kl. Sek., Datum & Tag, 24-Std. & Chronographenzähler, Tachymeterskala, Werk rotverg., 17 St., Zentralrotor, Kal. 1045, Ringunr., Flachspir., M. Geh. ca. 45 x 42 mm, L. ca. 21 cm, Nutzsp. altersbed., Glas zu ers., Überholung fäll., EZ 3, Lit. "Reise durch die Zeit" v. Marco Richon S. 612 OMEGA chronograph Speedmaster so called "Mark IV Professional", Switzerland around 1979, self winding, reference 176.0012, solid stainless steel case including original bracelet with deployant clasp, case back with Seamaster-Logo screwed-down, display of hour, minutes, small second, date & day, 24-hour & chronograph counter, tachometer graduation, movement copper coloured, 17 jewels, central rotor, calibre 1045, flat rim balance, flat hairspring, measures case approx. 45 x 42 mm, length approx. 21 cm, signs of use due to age,glass has to be replaced, service to do, condition 3, literature "Reise durch die Zeit"of Marco Richon page 612