Looks like you got a good score there, jonesy.
It's one of the later Hercus models, with the quick change leadscrew gearbox and power crossfeed. Sometimes these have been caned a bit if they have been in school service, but they usually only require a bit of attention to the main spindle bearings and a cleanup. As you say, a solid and well-built machine.
Where you did really well is in getting 'all the fruit' in the accessories. I spy fixed and travelling steady rests, threading dial, and both drive dog and turning face plates, as well as the 4-jaw independent and tailstock chucks, among those bits!
If you haven't yet discovered it, this Aussie forum is a great resource, and has a dedicated Hercus discussion area;
http://www.woodworkforums.com/f66/A bit of company history, including a description of your model;
http://www.lathes.co.uk/hercus/index.html The main page of that site has a lot of useful reading/downloads too.
