On first listen, a very worthy addition to the discography. The sound quality is certainly good enough, better than the recent Seattle.
The two tracks not on the Vanguard box, 'Africa' and 'When the lights are low' are probably worth the price of entry alone. Dolphy's contribution on the latter stood out for me.
Of the old warhorses, 'My Favourite Things' sounds particularly good, I thought.
I'd say any Coltrane fan is going to get something from this, Dolphy fans possibly even more so