" To Start with, these wristwatches ended up one-off or customized creations That always appeared lots such as pocket watches from which they developed. But shortly, wristwatches took by themselves aesthetic, with their unique technological innovations to resolve new problems introduced by wrist-borne timekeepers. Gucci began creating watches in 1997. https://www.watchesworld.com/a-history-of-watch-reference-numbers/