Thory Monsen of Potomac eScrap llc writes:
"I have an 8010 star mouse that has the "made in mexico" sticker on the bottom of the mouse. It was plugged into a terminal keyboard for an old xerox copier. The keyboard is a JD-2 PN 110K03250. The proprietary plug on the mouse clicks into the keyboard. The keyboard itself has an AT plug. I'm guessing that this model may have been manufactured for the copier side of the business."
"As you can see in the photos it uses a different chip but shares most of the other components."
Thanks for the photos and details, Thory.