A 1970'S PORTABLE SHIP'S FOGHORN BY THE TOKYO SIREN CO. DATED 1970 with a plaquette inscribed 'AUG 1970 TOKYO SIREN CO. LTD. TOKYO JAPAN and in Japanese, with extendable end, raised on a ebonised rectangular plinth, sound range: 1.5 miles approx., in original wooden box also with plate to the top signed 'FOG HORN (TYPE SH-180) TOKYO SIREN CO. LTD. TOKYO JAPAN',  64cm long when fully extended, 30cm high