This is a simple case for the RC2014 Micro computer board (a single-board computer based on the Z80 chip). The board will just slot in to the top of the case, and there are cutouts for accessing the FTDI serial pins and changing the jumpers.
Originally created in Fusion 360 - I've included the Fusion STEP file, and a basic STL file.
The author marked this model as their own original creation.