Cryptograph (coding and decoding machine) by Sir Charles Wheatstone, 1843-1875 Telecommunications 1843-1875
Silver fox locomotive plaque, London & North Eastern Railway Locomotives and Rolling Stock Components 1935
Silver thimble, used to pass a current through the 1866 Transatlantic cable, 1860-1866 Telecommunications 1860-1866
A pair of dice made in imitation ivory celluloid, early 20th century. Plastics and Modern Materials 1901-1930
Tin of 'Allenburys' throat pastilles, London, England, 1920-1940 Materia Medica & Pharmacology 1920-1940