A 1970'S PORTABLE SHIP'S FOGHORN BY THE TOKYO SIREN CO. DATED 1975 with a plaquette inscribed 'NOV 1975 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', the siren 30cm high, 35cm long, 64cm long when fully extended, the case 48cm long