Hi Ian,
don’t know if you are interested but I have a complete set of castings for the 2″ scale Shand Mason bought from Reeves some years ago. I have the chassis and wooden wheels complete to a very high standard, a complete copper silver soldered boiler, a full set of drawings and also the original set of Model Engineer magazines featuring the building of this model by Edgar T Westbury. So, the hard bits are all done, all that is left is the machining of the castings, steam fittings etc. I have not costed this out yet but I know the castings alone are now £340 and have no idea what a complet boiler would be. Anyway, if you are interested let me know and we can talk figures.
John