Mouthpiece, ceramic, Great Western Railway, white ceramic mouthpiece, part of speaking tube from Royal Saloon. STEAM Audit Dec 2015 - mouthpiece is ivory not ceramic Ceramic mouthpiece, Great Western Railway
Haldane apparatus, portable, glass, in wooden box, with facemask, mouthpiece and nose clip, by Aimer Products of London, from Middlesex Hospital, 1950-1960 Haldane apparatus 1950-1960
