As no replies I'll give an update.....
Well, yesterday I saw, heard and bought it!
I was also offered a Denon, but the Accuphase sounded absolutely fantastic! It was in very good condition (as far as my untrained eye could see!) and I am now the happy third owner.
My research also showed similar prices up towards £1000 over the last decade, one sold in Germany 2009 for 400 euro and another currently for sale by a dealer in Croatia for 500 euro. I also found out that Accuphase amps are build like 'tanks', they do not deteriorate and the wire clips are not a problem. That settled most of my concerns and as I mentioned, it appears to be in very good nick. It certainly weighs a ton!
I got a package price as I also bought a pair of one year old IPL S4tl Kevlar speakers (units: IPL/8/K Kevlar 8" and IPL/Fountek Cd3.0 Ribbon) made to good standard with all soldering done by a HIFI specialist. Also included was high quality cables. I had seen several post before regarding IPL. It intrigued me. The designer has made these for many years, as kits with high quality material and speakers at a very reasonable price. He keeps it as a one man show, but all posts mention his fantastic service and great sounding speakers! Well I am very new at this, but paired with the Accuphase they certainly sounded better than anything I have heard (which is a short list). I just hope to reproduce it in my living room!
The seller even gave a discount as I travelled some distance to see it, was not pushy at all, but took time to explain and answer my questions and also served a delicious dinner! A true gentleman! All in all I bought it for a similar price as the speakers cost new, which I find is very fair indeed.
Next is to add other items to the 'foundation', which might be a mix of new and vintage. I guess a CD player is first on the list. I had my eyes on a XTZ CD 100/11, but let it go as I wasn't sure if I would have anything to hook it up to!