That's a great selection of top notch old kit there and the NOS boxed condition will likely draw a premium, even over the same units opened for testing and proven good. Fortunately not everyone shares Jez's view on unobtanium ICs and apart from some Vfet devices most obsoleted top spec audio devices have modern counterparts, though they may not match the original part's stellar specs. Any prospective buyer knows this, it's a none issue.
Kuzma Stabi/S 12", (LP12-bastard) DC motor and optical tacho psu, Benz LP, Paradise (phonostage). MB-Pro, Brooklyn dac and psu, Bruno Putzeys balanced pre, mod86p dual mono amps, Yamaha NS1000m