an all metal conversation tube, black painted, American, c.1900, brass earpiece and bell, plaque 'WESTERN INSTRUMENT CO PATENTED CHICAGO' 100cm; a conversation tube by Hawksley, c.1900, double sphere brass bell with plaque 'T HAWKSLEY LD 10 JAMES ST OXFORD ST LONDON W1', ebony earpiece, woven silk tube cover, 109cm; a single drawer telescopic ear trumpet, unsigned, in different coloured vulcanite, 25cm extended