Flying G You have done a very good job listing the components, adding comments, and providing pictures.
I believe the vintage buyers interested in
bounded aluminum frames aka "glued n screwed" is small compared to steel, TI, carbon, and welded aluminum frames. Its a beautiful bike and has quality components and Im sure would be a fun ride. The seat post clamp will hurt and many times hacks like this will fail especially with heavier riders. If it was mine, I would not sell if the price is only 300..400 since you can make more parting it out.