1 - Microsoft Mouse & Microsoft Windows V. 3.0 sealed in box. Version 3.1 is the one everyone used. It's a 9 pin serial port mechanical mouse, they get stopped by dust & hair. Adapter for 20 pin serial port, set of 5-1/4" & set of 3-1/2" disks with manuals & papers. These may only work with older IBM XT type computer and the disks may not work at all anymore. I have a full 5  microsoft box case but only 2 sealed with the mouse in the box complete.

Pictures show all contents except the mouse. I don't  have a mouse to put in photo. Probably more collectible than useable.