Two unknown Windows 95 builds are shown in a video demonstrating the usability testing process of Windows 95 from early 1993 (most likely in January), which makes them the earliest confirmed builds of Windows 95. Despite very low quality of the video and similarity to the much newer build 58s, some visual differences can be observed. It is generally believed that both of these builds are earlier than build 34.
First build
First half of the video showcases the first of the unknown builds, running some kind of interactive tutorial about using the new shell as well as the graphical environment in general. The most obvious difference spotted here are the Start button icons, which look completely different than in build 58s. The Windows logo later replaced a computer icon, while the help icon is a simple question mark at this point. The search icon is particularly distorted, so it may be or may not be the same as in later builds.
Another difference is the Recycle bin name - apparently, it was called "Wastebasket" in this build. The same name is also used in some concepts or mockups of Chicago usability testing. The status bar in the Explorer (called File cabinet in pre-beta) window also says "2 Files in Folder", whereas in 58s it would say "2 Objects in Folder". The menu bar at the top of the window is also slightly wider than in build 58s. There appears to be no icon in the Explorer window titlebar unlike in later builds, though full directory path is displayed.
There is a strange, bright-grey line at the very bottom of the screen that appears to be part of the taskbar, but neither the second build or 58s have it. Both words in the name "File Cabinet" appear to be capitalized, which is also not the case with other builds. Desktop icon text is not highlighted unlike in the other build. Last visible difference is lack of ">>" after object names on the desktop, which is present in build 58s as well as the other build shown in the video.
The File cabinet icon color (either yellow/gold or grey) cannot be determined as it is highlighted throughout the entire first half of the video. Though footage of the person conducting these tests is covering the lower right corner of the screen, it seems like there may or may not be system time displayed there in neither of the two builds.
It's interesting that the tutorial instructs you to close applications via the "File" menu and not the close button.
Second build
The second build appears closer in appearance to build 58s, with the exception of the Explorer window. The titlebar now only contains the folder name and not the full path like in the first build as well as later builds. The close button on the left is also apparently different from the standard Windows 3.1x one used in all builds up to 81. It almost seems as if there is in fact a folder icon in place of the standard horizontal line on the close button. The status bar still says "Files" instead of "Objects", but the menu bar is now the same width as in build 58s.
Aside from the above and the Start menu icons, this build appears rather similar to build 58s. There is an extra folder seen on the desktop called "Personal>>", but it's unknown if that comes by default with the build or it was created for the purposes of testing.
Conclusion
A summary of the above reveals that the second build appears closer in appearance to build 58s than the first one does. However, there are some minor inconsistencies here, mostly with the Explorer window. For example, the close button was seemingly changed to something else in the second build and then changed back to its original state later. The Explorer titlebar text is another odd thing. There is also a possibility that the first build is not actually a real build, but rather a fullscreen test application showcasing the new interface, which would partially explain the inconsistencies and difference from the later build and 58s.
The first build
After opening an application from the minimized state
The second build
The File cabinet icon is grey
The Programs folder
