OS/2 2.00 build 6.304

OS/2 2.00 build 6.304 is a beta build of OS/2 2.0. Michal Necasek, author of the OS/2 Museum blog, appears to have some of the installation disks for this build and claims it was made in February 1992, shortly before the final build 6.307. It's also listed in several warez lists.