Windows 3.1 build 058

Windows 3.1 build 058 is mentioned in internal Microsoft e-mails from 1992-01, as well as 1991-12.

The first e-mail states this build is a pre-beta build for Windows 3.1 Final Beta and was released to testers on 1991-11-26. The second e-mail describes an issue when upgrading from this build to build 061b (Final Beta candidate). Setup would always cause a general protection fault (GPF) after copying file.

Unconfirmed screenshot
There is also a single screenshot of this build, but it is unknown if this screenshot is real or not.