Stop in for a cup of coffee

It is cool. Been collecting parts for it for years. Only thing left now is a chain guard, impossible to find a real one. It was a board track raced in HI in the 50's given to the rider on a sponsor with Triumph.. Seriously low neck serial number (4) and a prototype with a nickeled frame. Freaking piston in the motor has to be 12/1 compression also.
How'd you end up with it??