Derek Pratt for Urban Jürgensen – perpetual calendar, split-seconds chronograph and minute repeater

Collecting · · by Christian Bissener


Gold hunter pocket watch with silvered dial, sub-dials and moon phase, open on a white glove

Another very special piece made by Derek Pratt for Urban Jürgensen: a pocket watch with perpetual calendar, split-seconds chronograph and minute repeater.

It is based on a Louis-Elisée Piguet ébauche, a stock that came with Urban Jürgensen when Peter Baumberger bought the company. Derek Pratt then finished these ébauches into extraordinary timepieces. The case, like the dial, is made entirely by hand.

Gold pocket watch dial with Roman numerals, sub-dials and moon phase
The dial with perpetual calendar and moon phase