Offered is an original Apple Lisa mouse, model A9M0050, manufactured in the USA for Apple's groundbreaking Lisa computer system. The Apple Lisa Mouse (Model A9M0050) is Apple's very first computer mouse, introduced in 1983 with the revolutionary Apple Lisa. It is also considered one of the first commercially successful computer mice ever produced. The Lisa introduced millions of people to the concept of a graphical user interface (GUI), where users could interact with windows and icons using a mouse instead of typing commands. The mouse retains its original Apple Computer label with a clearly visible serial number and features the original captive cable and ball mechanism. A desirable collector's item for Apple enthusiasts, museums, or anyone restoring an Apple Lisa system. Specifications - Brand: Apple Computer - Model: A9M0050 - Year: 1983 - Made in USA - Original ball mouse - Original attached cable - Serial number present Condition The mouse is in good vintage cosmetic condition with normal signs of age and use. It has been tested and works perfect.