A commercially-produced kit by Michael Holden of Banbury for a 3/4 inch scale coal-fired Allchin traction engine, partly assembled and with what appears to be virtually all parts to complete and a set of assembly instructions.

I sold one of these last year, there are some pictures in the archive to show you what the finished article looks like, there's a living van kit by the same people listed on the "Miscellaneous" page at the moment.