I have a vintage QuickShot QS-120 joystick adapter for sale.
This expansion card connects to the PC's 8-bit ISA bus and provides two game ports, each support two analogue inputs (usually mapped to a joystick) and two digital inputs (used for fire buttons). The three-way switch provides two modes of auto-fire.
Excellent condition with no chips, cracks, scratches or damage of any kind; the item works perfectly and shows very little use.
Comes from a clean, pet-free, kid-free, smoke-free home.