They were produced all over.... Russia, Spain, France, England, Germany, Italy, USA, Japan, Austria, and I believe Brasil (?) or somewhere in Latin America...
The design asthetic is quite different from country to country but the motor concept (universal serial wound, 3 pole, electromagnetic field, etc) was generally similar. Most prewar was stamped tin plated steel that was painted or lithographed. There were other methods of construction (wood turnings, cast iron, die casting etc) . These were the toys of an age, and typical, production cost reduction drove larger manufacturing concerns to new materials and methods.
