Hello, I am obviously a very late comer to this discussion but I also have a D66 and am interested to learn more about about it. It is not in a great condition, its previous owner having dragged it around all of the folk clubs in London. But, after a recent overhaul and some nice new strings, it sounds amazing and plays beautifully. The information that I have been able to find so far suggests that the guitar is from the mid 1980s but the folk singer (mentioned above) says he was playing it in the 1970s...is he right?