Part-built 3 1/2 inch gauge Rob Roy with Ellis boiler

A well-advanced "Rob Roy", comprising most of a running chassis with pistons and valves fitted, valve gear fitted to one side and machined components for the other. There is a commercially built silver-soldered copper boiler by the estimable John Ellis, complete with original twice pressure hydraulic certificate, a box full of unmachined castings, commercial hand and axle pumps, stainless steel grate, a set of drawings and a copy of Martin Evans' construction manual.