Early Door Alarm System with Glass Battery, c. 1920

Electromagnetic Motor, c. 1880

High-Tension Transformer, c. 1910

2 Interesting Electric Motors, c. 1910

Magneto-Electric Shock Generator, c. 1880

Spark Gap Induction Coil

3 Special Bulbs in Triple Mount, c. 1920

Froment's Electric Motor

2 Small Electric Motors

Very Rare Nernst Lamp

29 Early Carbon Filament Bulbs, 1900 onwards

Electric Motor with Chromic Acid Cell by Ernst Plank, c. 1900

Electric Motor and 2 Armature Models, c. 1910

Electromagnetic Rotating Motor, c. 1860

2 Current Generating Dynamos, c. 1915

Small Experimental Motor, c. 1910

2 Electromagnets according to Weinhold, c. 1920

Small Electromagnetic Motor, c. 1900

Large Dynamo-Electric Demonstration Machine, c. 1920

Early Electric Motor According to Moritz von Jacobi, c. 1850

2 Dynamo-Electric Machines, c. 1910

Electric Motor with Rotating Geissler Tube, c. 1880

2 Early Electric Motors, c. 1910

Large Early Electric Motor, c. 1890

Early Electric Motor, c. 1900

Electromagnetic Motor with Geissler Tube, c. 1900

Electric Experimental Motor with Rotating Mirror, c. 1900