Original OPENSTEP 4.2 User and Developer CDs. CDs have Apple Computer copyright (last OPENSTEP version before Apple bought NeXT). OPENSTEP was the basis for OS X.
Can be used to install OPENSTEP on m68k black hardware, i386 white hardware and Sun hardware (I haven't tested installing on Sun hardware).
http://picasaweb.google.com/100412058998389567448/FSMisc#5639255039402034786http://picasaweb.google.com/100412058998389567448/FSMisc#5639255049670405282Last set on eBay (with books and manuals) sold for $300+. The OPENSTEP Developer CD (for developing applications) probably drove the price higher than just the User CD (for installing the base OS).
Selling my CDs for $225 shipped to the lower 48.