Certina Blue Ribbon automatic collectible green dial

Certina Blue Ribbon Ref. 623-1218-41 For Volvo Why does this watch matter? Case shape and green dial aside, this Certina is rare and has a bit of history as it was delivered to Volvo to celebrate its 50th anniversary. The watch we have here dates from 1977. It is in very good condition and has been serviced. new glass. Manufacturer: Certina Model: Blue ribbon Reference: 623-1218-41 Year: 1977 Material: Stainless steel Dimensions: 36mm diameter; Thickness 11mm Crystal: Plexiglass Lume: Yes, tritium Caliber: Certina. self-winding, caliber 25-011