This wallmount is actually for a 100% homebuilt game controller that is compatible with the common Atari 9-pin joystick format of the 80s and 90s. In other words many Commodore, Atari, SEGA, Sinclair, MSX etc systems of the era. I've posted the links below for the PCB and Case if you want to try this yourself. See my design list for wallmounts for other controllers

• Also usable as a controller stand on a shelf

• Countersunk screw holes

OnShape Model
https://cad.onshape.com/documents/1a8e16be8b90e2a7aaee9bc0/w/150b97c90fb3250aeb25ff08/e/609514299d8b47262303d4c1?renderMode=0&uiState=680de9e51a082868bfb1eb46

PCB
https://www.pcbway.com/project/shareproject/Commmodore_Atari_Amiga_9_pin_DIY_Game_Controller_23e67618.html

Game Controller Case
https://www.thingiverse.com/thing:6667640