zenith personal computer systems MS O/S 2 version 1.0 In Original Box Rare!. Shipped with UPS ground. Please see all photos. Complete in original box and in pretty good condition. Disks are untested as I have no way to test. However I do not suspect there would be an issue with these functioning as other software sold from the same lot has had no issues. This is extremely rare and hard to find especially with the original box. Examine all photos closely so you can see the best condition. Only one listed on eBay at the time of this listing and possibly the only one ever! You will most likely not see this available again!