This vintage IBM software is a rare find for collectors and enthusiasts. The 1st Edition of the DOS 3.30 Disk Operating System from 1987 comes with 5.25 software disks that are in great shape. It is perfect for those who are looking to add to their vintage computing collection or for those who want to experience the early days of computing. This software is compatible with IBM PCs and clones and is a must-have for any vintage computing enthusiast.