Together with Akfamilyhome, Forest of Illusion acquired a development Nintendo Switch system (EDEV) from a seller in Hong Kong.
The Unit is from around April 2016, making it the earliest Nintendo Switch system to be found so far.
"The data (factory test files) cannot be released since it's too recent, but all of the files have been backed up safely and the system has been sent to someone for safe keeping.
Some other things of note are the different screws, volume buttons, and it being referred to as DPRD."
Source:Forest of Illusion Twitter