Check the listing for details. Microsoft MS-DOS Concise User's Guide Collectible Piece with COA Sealed. Condition: Brand New. Listed at 39.99 USD. Step back into the early days of personal computing with this original OEM User’s Guide for MS-DOS by Microsoft. A genuine piece of tech history, it comes complete with its Certificate of Authenticity, highlighting the era when MS-DOS helped define modern computing. Preserved in mint condition with its original protective wrap intact, this guide offers a clear look at how users once navigated command-line systems, managed files, and interacted with early PC software. It’s both a functional reference and a nostalgic collectible from the foundation of the digital age. An excellent addition to any retro computing collection or a thoughtful gift for technology enthusiasts, this item represents the legacy and innovation that shaped today’s computer world.