Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Well, I am not a Wilesco expert, but this looks very much like the very first "Wilesco" roller I acquired what looks like ages ago (sold long since..).
I learned later that this strange livery (meaning: brass boiler/canopy etc and other parts like body, nose etc looking as if prepared for but never actually painted + ,in some specimen, a non-standard burner...) indicates that it is a roller assembled from original Wilesco parts by the Dutch importer for Wilesco products in the late 60s/early 70s (?) and sold in the Netherlands and Germany.
The original brass versions of the Wilesco roller / TE have an all brass finish, as you will know.