Some good general information about the Triumph 10 here, from the VTR site:
http://www.vtr.org/Triumph10/index.shtmlA listing of known 10s in North America, from my own site:
http://triumph-herald.us (scroll down and click on the picture of the red Triumph 10).
Again, feel free to "PM" me, or contact me through my web site or from the first entry on this page, from the VTR site:
http://www.vtr.org/consultants.shtmlfor specific questions.
It wouldn't surprise me if the 43k miles is original. And an engine that turns is often a pretty good sign! BTW, going by the commission number, it's probably a 1958 model, although it might have been titled as a '59. I look forward to hearing more about the car!