Meanwhile, there’s some proof that Intercontinental distributors hated the inconsistent and sometimes illogical numbering techniques in their Swiss overlords. Although the crystals around the 160xx technology of Datejust watches remain made from acrylic, the sloped "pie pan" style dial from the preceding technology is absent, and replaced by 1 with https://www.watchesworld.com/a-history-of-watch-reference-numbers/