For sale - Imperial 3" trackball with serial hack (works in DOS (CTMOUSE, etc) and is plug and play in Windows). Requires 5V power from the included PC power connector.
This trackball also has new bearings and rollers.
Asking $39 SHIPPED via USPS Priority Mail. (Reasonable offers will be considered)
PM me if interested.
<EDIT - Added the fact that its a 3 inch trackball, and that I'm considering offers>