Mac OS X Public Beta build 1H39

Mac OS X Public Beta build 1H39 is the official beta release of Mac OS X Public Beta. This version was released to the public on 2000-09-13 and allowed testers to try the new operating system and Aqua interface before the official release of Mac OS X 10.0. Mac OS X Public Beta initially retailed for $29.95 in the US. It is also one of the very few macOS builds to have a timebomb.