French, c.1860s, leather covered case with brass plaque 'APPROVED BY THE ACADEMIE DE MEDICINE DE PARIS, REWARDED BY THE UNIVERSAL EXHIBITION PARIS 1855' etc., set of three chains and two handles, case 22.3cm across; with an American Oxydonor Diaduction device, c. 1900, patented by Dr Hercules Sancheof Detroit in 1890, device in engraved nickel plated capsule, this in card case with 114 page instruction booklet, card case 13cm across (2)