This model features the iconic old IWC cal. 83 movement. It has a large 35mm case. Furthermore, it's an Inca-type with a shock-resistant device, only made in the final years of the 83. The classic cursive logo, bar hands, and bar indices create a simple, IWC-like combination, and the slender lugs give it a very classic and refined atmosphere. Many 83 models have small cases, and most lack shock resistance, making this practical old IWC rare and valuable. Purchased in Europe, it has not been serviced in Japan. Currently, it runs within one minute per day, but no warranty is provided. Please consider this as a guideline at the time of listing. I have sold IWC watches like the 83/88 in the past, but they have become difficult to obtain. I hope you will consider this opportunity. Returns and exchanges are not accepted to prevent issues such as parts swapping. Please be sure to inquire about any concerns beforehand.