From the ArcaMax Publishing, Trivia Newsletter:
http://www.arcamax.com/news/trivia/s-342353-234684
Before the inexpensive miniaturization that became possible in the 20th century, most watches were pocket watches, which had covers and were carried in a pocket and attached to a watch chain or watch fob. Watches evolved in the 1600s from spring powered clocks, which appeared in the 1400s.
This news arrived on: 05/02/2008