Model BO-UK1, of type found in German FW 190 and Me 109 fighter aircraft. Made by Junghans (Black Forest area of germany), ca. 1939. Radium dial - still glows well (and will for decades to come). Small piece of radium missing from one of hands. Clock and Chronograph functions work well. Excellent overall condition, some chips on apint on case and bezel. $450 plus postage (certified check or paypal)