bspitt - I'm up for this, as I somehow managed to accumulate a few too many 6wt lines.
I have a Scientific Anglers Ultra III WF6F in a gold color (sunrise?) that isn't in a box, but is unused. Looks brand new to me, and has a short piece of leader butt section nail knotted to the end of the fly line, with a perfection loop on the other end of the mono.
PM me if this works for you.
H.A.