Hardly used, I could sell it as brand new if I were dishonest. No marks that I can see, I've taken it in part exchange for a guitar.
At the moment it is tuned as the top five strings of a guitar, but I can easily restring it and set it up as a cittern, I do think it will work better that way, as tuning is a big part of the character of these instruments
It has a fitted Headway FEQ and comes with a shaped hard case. If it were new, it would cost £3,260, and about to go up.