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Six carborundum resistors

5 resistors mounted of a rectangular bakelite base board

1935-1960

Resistor, wooden board

1901-1930

Coil, European, 1850-1910

Coil, European

1850-1910

Pair of HF generating coils, European, 1860-1910

Pair of HF generating coils, European, 1860-1910

1860-1910

Resistor coil for a small motor, insulated copper wire wound round cylindrical metal core, with handle, mounted on wooden base, A. Gaiffe, Paris, maker, French, 1880-1920

Resistor coil for a small motor

1880-1920

Resistor for use with electrocardiograph machine, 1934

Resistor for use with electrocardiograph machine

1934

Inductor coil, cased, by E. Ducretet, Paris, French, 1870-1910

Inductor coil

1870-1910

Tesla coil, probably from electrotherapeutic machine, European, 1850-1910

Tesla coil

1850-1910