Bit of a tricky one that, hard to value. It's not a particularly popular line weight or length to be honest-only my opinion though. I have a Hardy 10'6" graphite 7/8 early 80s and would think the value to be similar. If I were to sell mine I would like to think it's worth a 100 quid all day long but would probably end up letting it go for 75 ish. Yours being in such good nick may get 50.00 more. Something yours definately has going for it is the Pike fishers may be interested-it's beefy enough and a good length for playing big pike.
I put a mint, as in brand new, Orvis TLS 9' 9wt up on here a year or two ago for a mate. It had never had a line on it-150.00. Never got one enquiry

. On reflection the line weight held it back, that's what I think anyway.
Someone else may see it completely differently but that's what I would expect it to make.
Chris.