Keywords: Nuernberger Ei offen.jpg An antique clock-watch taschenuhr in Philadelphia Memorial Hall USA made in the 16th century by Peter Henlein of Nürnberg Germany This is believed to be the oldest clock-watch in existence http //books google com/books id WLSAAAAAMAAJ q 22peter+henlein 22 dq 22peter+henlein National Geographic magazine Vol 92 1947 p 422 Taschenuhr Philadelphia Memorial Hall USA 16 Jahrhundert Peter Henlein Nürnberg Deutschland Uploaded by author Peter R Suter Bildbearbeitung Peter R Suter Released to public domain Peter Henlein 16th-century watches |