JUNGHANS calibre 30 plane board watch with chronograph, Germany around 1940, blackened case FL.23885, snap on case back, turning bezel under glass with 60-Min-graduation, winding & chrono-pusher at 6, black dial with Arabic luminous numerals, 30-Min-counter at 6, original luminous hands, nickel plated movement with intermediate wheel, screw balance with Breguet-hairspring, diameter approx. 61 mm, condition 2-3