" Initially, These wristwatches were 1-off or customized creations That always appeared a great deal such as pocket watches from which they developed. But before long, wristwatches took on their own aesthetic, with their unique technical improvements to unravel new difficulties offered by wrist-borne timekeepers. Mechanical luxury watches are a https://www.watchesworld.com/a-history-of-watch-reference-numbers/