Just got this beauty for my Win98 machine: Logitech Marble Mouse (PS/2) : r/Trackballs
Download Logitech Control Center for Mac | MacUpdate
Logitech Trackman Marble Trackball Mouse - 910-000806 for sale online | eBay
Logitech Trackman Marble: Analisis (Drivers, Pros y Contras) - CGnauta blog
Logitech TrackMan Marble, ratón con bola de seguimiento con cable, seguimiento óptico de 300 DPI Marble, Ambidextrous, USB, PC / Mac / Laptop - Xtrasoft ES