The product is a vintage Microsoft MS-DOS operating system on 3.5" floppy disks from 1988. This specific version is the "R" Version 3.3 Plus Model OS-31-3. It is designed for use with DOS operating systems and is in English language. This set includes two 3.5" floppy disks and is a rare find for collectors of vintage computer software. Made in the United States by Microsoft, this OS provides a glimpse into the early days of personal computing technology. I have two sets of these, and there are pictures of both sets. Let me know which set you prefer. These are untested, but appear to be in good condition. Smoke-free home.
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