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

Nicely finished. Regardless of the modest 40mm diameter, the Mark XX wears instead extended. The lugs extend instead much, plus the straps are padded and stitched in an exceptionally demanding fashion, making them stick out and visually increase the lug-to-lug footprint on the watch just a little bit. You'll be able to hope the IWC Pilot’s Watch