Rare 1940s Seiko Seikosha Naval Chronograph Pocket Watch. The stunning aged patina dial with black numbers, sub dials at 6 and 12 with matching hands is signed Seikosha. The manual wind movement is working and has just been serviced, signed Seikosha. The chrome 51.8mm double snap back case is signed SKS 14447 and engraved to back with military marks, was acquired in Japan 1945 by Dale Lunberry U.S Military and is engraved on the inner back. Very rare as they were used by Japanese "Kamikaze" Navy pilots during the war.