Length of Hyde Park seamed lead water main, 15th century, bearing two wiped, soldered and overcast joints Hyde Park water main
Bottle of tetanus anti-toxin. Marked with 'Nr. 75'. Glass, hide caps, lead seals, various makers, German, 1900-1910, varying size Bottle of tetanus anti-toxin 1900-1910
Portion of first underground cable laid in London, unknown maker, London, England, 1844 Portion of first underground cable laid in London, 1844 1844
Section, of first London underground cable, on wood mount with a brass plaque, and two brass screws 1844-1923