Windows 3.0 RC12

Windows 3.0 RC12 is a Release Candidate build of Windows 3.0. According to Term24 who owns three out of the five installation diskettes dated 22 March 1990 plus two Netware Shell Components disks (the latter being dated 6 April 1990, indicating that there were newer RC builds), only disk 5 of this build remains intact, while disks 1 and 4 have been mostly wiped with only some remaining files like,  , and   on disk 1.