Three Windows NT 3.1 install CDs, all in excellent condition. All from the original Windows NT 3.1 release in 1993. Microsoft Win32 Software Development Kit, Final Release, Version 3.1. Microsoft Windows NT Device Driver Kit Final Release, Version 3.1. Microsoft Windows NT Operating System, Version 3.1.Also included: the sleeve for the operating system install disk. This has yellowed somewhat with age and has a few smudges / defects. The item "Microsoft Windows NT 3.1 1993 Complete Set CD Disks SDK, DDK, OS Install Disk" is in sale since Saturday, December 16, 2017. This item is in the category "Computers/Tablets & Networking\Vintage Computing\Vintage Manuals & Merchandise". The seller is "tstonec" and is located in West Columbia, South Carolina. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Russian federation, Israel, Mexico, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica.