hmmm ... these come to mind ...
Dual 3.5"/5.25" Floppy Drive (working x 3)
IBM PS2/35 Computer complete with original setup diskette, 3COM EISA Ethernet, Sound Card, 127mb HD. I acquired it New In The Box in 1999 and it has seen very, very few hours of use since then ... works great but is too painfully slow.
DOS 2.0 on 180K 5.25" diskettes (with original labels) in the binder.
Windows NT Beta 2 CD's (before it was Windows NT)
Visual Basic (before it had any version numbers) ...
CPM DOS (on 5.25 Floppy)
Do any of these come close ????