Fox patent is from the UK. We had that on hear about a month ago.
I enjoy this tool very much. I have send pictures of it everywhere and I do believe the tool is very rare - at this stage mine is the only one people have seen, although there will be others hidden somewhere. It is going to have it's own case with the patent pictures and describtion, printed on old looking paper, in it. It will hang next to my 100 years+ buffet.
To me collecting old stuff is not about what they are worth in terms of money - this is what I get out of it:
1. The knowing that there are stuff out there and most people don't know how "valuable" they are.
2. The relaxation unpacking crates and crates full of tools in pawn shops.
3. Researching the tools - my general knowledge is expanding with every new search! The shown Bentall spanner have lead me to this:
http://www.itsaboutmaldon.co.uk/bentall/index.shtml4. The showing of the tools.
I am not going to try and sell the extra tools for now - maybe in 9 years when I have retired.
......and for now, I will restrict myself to 100 USA dollar a month to spend on old tools

Will post some more interesting tools soon.
Lennard