A plumber doing renovations of an apartment building outside Chicago, tore down a brick wall and found a BEAST that proved to be a baffling mystery to vintage motorcycle enthusiasts.
It was one of a kind of motorcycle bearing 1917 and named TRAUB.

One of the senior citizen in the same apartment said that is son had stolen this motorcycle but he was lost, never returned back, but the motorcycle stayed. Where was it from, who made it remains unknown.

Now this is kept in a Museum, because it is not a normal motorcycle after all. It is the rarest in the world because the engine components were magnificent. The pistons were handmade and had gap-less cast iron rings. The engineering and machinery were simply years ahead of their time.
It has no one equal to it in that age.
It has sand cast, hand built, 80 cubic inch side valve engine and the ability to reach 136 km/h or 85 mph with ease. Handmade features made it beautiful.

The question left after all is that how on earth could a machine have been produced in such great form.

The hunt for its creator is still on, popularly known as the TROUB HUNT.