No the first prototype mouse was this one I think: <a href="http:&#x2F;&#x2F;www.computerhope.com&#x2F;issues&#x2F;ch001083.htm" rel="nofollow">http:&#x2F;&#x2F;www.computerhope.com&#x2F;issues&#x2F;ch001083.htm</a>  Made in the 60s and patented in 1970.<p>The Cursor III is this: <a href="http:&#x2F;&#x2F;www.vintagemacworld.com&#x2F;add2&#x2F;add8.jpg" rel="nofollow">http:&#x2F;&#x2F;www.vintagemacworld.com&#x2F;add2&#x2F;add8.jpg</a>