I have disassembled the unit to clean and photograph it's components.
Let's start with the power supply.
Not sure what to make of the date. Year is 85, that clear, but the 031 is not so clear. There is only 52 weeks in a year, so no need for three digits in the number.
Here is Commodore's serial number for this unit. The 31'st week of the year is in August, so maybe the 031 is the week. I'll talk more about what I think the origin of the unit is a little later.
Bottom view of the power supply showing cooling fan.
The bottom of the lower case half. The case is a standard European plastic 128D. These cases hold the keyboard in the bottom half.
The serial on the case bottom, and a name; "KENTRON". Did Commodore name their early samples?
Inside of the lower half of the case.
I have to wonder what Commodore was thinking. Handles, a place for the keyboard, and something to wrap cords around on a desktop computer. Where does one attach the monitor?
These plates level out the bottom of the case, on the inside.