This is a super rare version of the Apple Lisa 1 mouse, originally purchased from a former Apple dealer in Holland alongside a Lisa 1 "Twiggy" computer. It appears to be a development unit—possibly even a prototype—of the Lisa 1 mouse. According to the previous owner, he had direct contact with members of Apple’s Lisa development team and was sent this pre-sale unit to test alongside an early Twiggy model. This makes it a truly unique piece of Apple history, offering an incredible opportunity for collectors and enthusiasts.