This is the bracket that hold the joystick module to the controller shell in a vectrex controller. It (like the arcs before it) was designed and made for a fellow vectrex owner whose controller had bit the dust when the mounting ears on the joystick bracket snapped and the joystick basically fell into the controller shell.
It's not a moving part so it's not much to say about it other than it probably should be printed with both raft and supports enabled to get somewhat perpendicular angles and planar mounting surface for the joystick module in the end. It was modelled after an original unbroken joystick bracket. The hole pattern for the mounting holes are off, I know. But the original also was spaced that way. I think it's a fail safe for irregularities in the controller shells. If the screw posts it is supposed to mount on are not straight, this slightly off center hole pattern may compensate for that. Anyway, the off center hole pattern IS intentional from my side. It fitted my controller and it fitted the controller that was repaired with it when I made it. So I hope it will fit your controller too.
I took the liberty of marking the top with direction words to minimise confusion on how to rotate it when mounting the joystick module. Don't worry, those will be covered by the controller shell later and won't be seen.
I don't think it matter how you print this as long as you use supports for the overhanging features. I think the rule of thumb "most area on the build plate" applies here. Or you could print it on its side, but then you need to have many supports to make sure the joystick hole come out round and not oval.
If the screw holes come out very tight, gently drill them out to the right size. Drill slowly and start backwards. Yes, backwards. If you drill the right direction from the start it will grab the part and try to tear its way through. Start backwards and go slow. Once the hole is big enough to let the drill "aim" right into the hole, drill normally and finish the job. But drill slowly!
Not that complicated part to begin with. I measured an original one with calliper and radius guage for the corners and then drew it up in my chosen CAD software.