Hello Richard
I tried this Google search
model steam engine sale images
Some of the images link to auction houses. It may help you to assess the market.
**LINK**
Or this search for auctions:
https://www.google.com.au/?gfe_rd=ctrl&ei=apFzUsbrPPDC8get-YDoDA&gws_rd=cr#q=model+steam+engine+auction
I can see the model is well packed in a frame for transport. It looks like a fine example. Better photos out of the packing frame would allow prospective purchasers a better view of its merits.
The same would apply to the rest of the collection. Old tools, machinery and bits and pieces (some of which will quite sought after) are becoming increasingly difficult to source. Get several opinions if you can, before you start disposing of the collection.
Beware of dealers who say how bad the market for trains is and that most of the other stuff is worthless…….
Was he a member of a club? that might be a good place to start? they should know what the models are.
Regards
John
Edited By John McNamara on 01/11/2013 11:55:24