Winter poses numerous queries to your watch wearer — useful, sartorial and sometimes technical inquiries. Like the ref. 6536 above, it absolutely was readily available in either chronometer and non-chronometer variants, but this was The 1st time the COSC watches really experienced the 'Formally Certified Chronometer' text within the dial. https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/