HOW TO IDENTIFY DIFFERENT WATCH CASE BACK DESIGNS AND ENGRAVINGS NO FURTHER A MYSTERY

By far the most pertinent up grade for gearheads is definitely the IWC Mark XX’s pivot to an IWC made calibre. The Mark XVIII utilised the Sellita-based mostly IWC 35111. While a workhorse calibre created to IWC’s specs, its sub two times forty two several hours of power reserve still left a bit to be sought after in a contemporary marketplace