JUNGHANS J 88 aviation chronograph of the German air force, Germany around 1960, manual winding, frosted chrome-plated case, screwed down stainless steel case back with military engraving (thread has to be repaired), revolving bezel with 60-minutes-graduation, black dial restored, Arabic luminous numerals, luminous hands, gold plated movement calibre 88 with intermediate wheel, 19 jewels, screws-balance with Breguet-hairspring, diameter approx. 38 mm, condition movement 2, condition case 3-4