Missing CD-i accessory Trackerball

[vintagegamecrazy]

don't see this in the db, seems kind of cool.

http://cgi.ebay.com/Philips-Trackerball-CDi-CD-i-22ER9013-Player-NIB_W0QQitemZ5842594874QQcategoryZ15065QQrdZ1QQcmd ZViewItem