ETA Calibre 2790.1 – Part No.242 Cannon Pinion with Driving Wheel Related posts: ETA Calibre 2761 – Part No.242 Cannon Pinion with Driving Wheel ETA Calibre 2769 – Part No.242 Cannon Pinion with Driving Wheel ETA Calibre 2790 – Part No.242 Cannon Pinion with Driving Wheel