Great looking guitar, Mike!
I think PFG on your build sheet is really PF6.
Your set of pickups is a different molding from earlier '75s, take a look at my guitar in the showcase section (75-137) and see the difference.
Appraising your guitar is kind of subjective, and one of the main questions any Alembic owner is going to ask- 'how noisey is it? Does it need the electronics upgrade?'..... with that said, gtrguys' ballpark is right, but i wouldn't let go of mine for that considering the recent refinish and electronics upgrade!