Help pricing a '87 Koga Mixte Traveller

Thanks people. :)
Now that I have it at home, I don't really want to sell it, but just don't need another bike.

How tall are you?

(being a rather large lady i'm sure it won't fit me, but I want to be sure)

Size is 54, but could measure if that's c-c or c-t and what the effective tt is.
I'm 1.81m (= 5ft 9?).

That is very pretty.

I'll swap you a Cannondale Rush for it if it fits my girlfriend?

Thanks, I'll keep that in mind. :)
What year, state etc?