Deutsche Pr?zisionsuhrenfabrik eGmbH open face Glashütte silver pocket watch, Germany around 1920, smooth Lucia-case patinated, enamel dial with Breguet numerals, constant second at 6, blued steel hands hour later, gold plated 3/4-board-movement, 16 jewels, 2 screwed down gold chatons, compensation-balance with Breguet-hairspring, precision adjustment, diameter approx. 53 mm, condition 2-3