I was pretty surprised to see this. Its possible that someone would want it for a collection but this looks like a serious seller.

I am selling a genuine disc of Microsoft Windows NT Workstation. Service Pack 4
Comes with the basics and installation manual with the Certificate of Authenticity
and Product ID#. The disc has no scratches and works perfect. Please respond to
the ad if interested. Cash and serious inquiries only. Thank you.

via [craigslist]