" At The outset, these wristwatches had been just one-off or tailor made creations That usually appeared a great deal like the pocket watches from which they advanced. But shortly, wristwatches took on their own aesthetic, with their unique specialized innovations to unravel new troubles presented by wrist-borne timekeepers. Hublot’s https://www.watchesworld.com/a-history-of-watch-reference-numbers/