An Atari/Commodore/Nabu wired joystick enclosure.  Joystick innards have 40mm x 85mm hole pattern.  

The fire button switch is a common Cherry keyboard key switch.  The fire button is from another old toy, dimensions are 10mm height by 14.6mm diameter.

The cable is from a 9-pin DIN RS-232 cable with a 4.8mm diameter wire size.

As the joystick comes from China, the connector pins extend out horizontally.  I replaced the 5-pin connector with one that extends perpendicular (down) from the board - it fits better in the case.

The unit is a nice size, 104mm x 104mm x 41mm and fits nicely on desk or in large hands.

Screws are 3mm x 6mm with tapered head and 3mm brass inserts.

The base and top are printed without any supports.  I printed with a large brim to keep the edges from lifting.