The hunt for parts for the Matchless girder fork has NOT been successful. Now I have found another lost cause instead.
Monark circa 1929 about 250 - 350cc. As rusty as the Douglas frame, if not worse.
There are some parts missing from the front forks (fastener for the handle bar) but nothing crucial that can not be replaced or made.
I did not get the correct petrol tank, that might be a problem. Now I am waiting for the Husqvarna oil tank I bought. Almost the same model as the ones used for the old Monarks. Hope it fits.