https://www.youtube.com/watch?v=4cyun6SVfPM

This is an amazing restoration of a toy from 1918. The guy goes so far as to build his own stamping presses to remanufacture many of the parts that are totally destroyed.

I can't help but think that this toy would have been one of the most expensive toys you could buy in 1918. It has tons parts made of steel and all kinds of clockwork. After this restoration, it's probably among the most expensive toys on the planet.