In the meantime, there’s some evidence that international distributors hated the inconsistent and sometimes illogical numbering units in their Swiss overlords. When doubtful, go for a Serpenti in two-tone metals—a modern, placing watch that will hug your wrist just like a second skin. By 2010, Rolex released a random serial https://www.watchesworld.com/a-history-of-watch-reference-numbers/