Based upon my research, I think it was made by Hofler but most listings has it as Technofix. The set is NOT complete. It is missing the engine.
The item "Technofix / Hofler Atomic Train of the future Tin Toy Vintage W. Germany withBox" is in sale since Friday, October 29, 2021. This item is in the category "Toys & Hobbies\Vintage & Antique Toys\Wind-up Toys". The seller is "pitoys" and is located in Morton Grove, Illinois. This item can be shipped worldwide.