Winter poses a number of questions to the watch wearer — simple, sartorial and often specialized questions. Starting production at the same time as being the ref. 6200, the Submariner ref. 6536 returned to some thinner scenario and smaller crown (and 100m h2o resistance) but was offered the Cal. 1030, https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/