I am the 2nd owner of this card, started off as a 256k - I have the original mouse, the upgraded card, documentation, and software! The original diskettes can be read and I am including in the lot  two 1.44 diskettes that have the drivers to configure the card in Windows and DOS. BUS mouse tracks very well - box, manuals, original 5.25 disks, packaging and padding are included. The box itself is 6/10 mostly due to removal of a personal information sticker at the top left that I could not otherwise clear from it. And also age. 

Here's a vid of it working on a slightly newer SX-33:

https://www.youtube.com/watch?v=AAfRrJvYpTk

I've had this in my own 386 for over 5 years, it works amazingly.

Perfect for a high end 286, mid range 386.

Mouse tracks very well, graphics look mint even on an LCD.

Local pickup = discount. Contact me for more info.