Copper coil, helical, with brass terminals and mounts at either end, probably part of an alternator from a d'Arsonval-type high-frequency electrotherapy apparatus, French, 1890-1920. See note. Copper coil 1890-1920
Two copper coils, helical, loose, possibly part of alternators, French, 1890-1920 Two copper coils 1890-1920
Coil, metal wires round wood frame, three-sectioned frame, European, first half 19th century Coil, metal wires round wood frame 1801-1850
Large electromagnetic coil, wires wrapped round wood supports, used by G.W. Harris in his experiments on remote stimulation of the pituitary glands of rabbits. See note. Large electromagnetic coil 1940-1950
Two coils, wood frame, metal wire and fittings, European, first half 19th century Two coils 1801-1850