Nice cue.
Seems a little high in this market, especially if there if only one good shaft.
Unless the cue is a Huebler Custom Shop cue with the date inside the bumper, 86-93 may be as close as you are going to get to the age.
My initial feeling is to offer less than $425, however...
One shaft or two
Are the shafts in good condition
Does the butt roll straight
Do the shafts roll straight
Post pics of the shaft / shafts which are important to the value of this cue
Peace
Ted