⭕️ Guaranteed Authentic IWC Square Old International Vintage Elegance and Luxury 1970s Cal. 423 is the final version of the 400 series, IWC's last in-house designed and produced movement. It truly marked the end of the Old International movements, a rare movement with only 6,600 pieces produced in four years. What's remarkable is that, unlike previous movements, it features the gold chaton setting for the jewel rubies often seen in vintage watches of the time, and an oiling device is installed on the escape wheel bridge, reflecting the dedication put into this final movement. The dial is a silver textured dial with Roman numeral indexes. - Brand: IWC - Model Name: Hand-wound watch - Dial Color: Silver - Belt Material: ss aftermarket - Case Material: ss Working condition Size: Approximately 31 Minor scratches, small dents (overall) Please understand that this is a vintage pre-owned item before purchasing. Please allow for slight variations due to amateur measurements. In addition to the above, there may be age-related deterioration or issues that we are unaware of.