For any antique watch enthusiast, the Old International (Old IWC) is a legendary timepiece. This is a rare piece, complete with its original mesh bracelet (*^^*) The watch features a slightly cushion-shaped stainless steel case paired with a refined silver sunburst dial, resulting in a design that combines excellent visibility with a sense of luxury. The movement is a Cal. 8541B. This in-house caliber incorporates IWC's renowned Pellaton automatic winding system. Compared to the previous Cal. 8541A, it has been enhanced with a **hacking seconds function**, further improving its practicality. The measured daily rate on a flat surface is approximately ±7 seconds, maintaining good accuracy. It's in good condition for a vintage watch, and has been carefully overhauled, so you can enjoy it for years to come. Overall, it's in excellent condition, so please consider this opportunity (_ _). [Typical Overhaul Cost] Approximately ¥40,000～ [Case Width] Approximately 36.0mm (excluding the crown) [Lug Width] 19mm [Accessories] Watch only. [Wrist Size] Free size [Source] Purchased from a store's buy-back program The mannequin's wrist in the photos is approximately 14.5cm. A one-month operational warranty is provided from the date of purchase. We cannot cover malfunctions caused by water damage or dropping the watch. We hope you will take good care of it (_ _).