This Biamp Desono C-IC6 6.5" 2-Way Coaxial Ceiling Speaker 8Ω has been fully tested and is in good working condition.
Cosmetically this unit has some minor marks and scratches. 

Missing Speaker cover.

The Desono C-IC6 is a two-way passive coaxial loudspeaker optimized for speech reproduction in conferencing applications. Designed with the installer in mind, the C-IC6 loudspeaker supports audio connections via either standard category cable or traditional speaker cable. They can be blind-mounted from below the ceiling, and feature a magnetic grille for easy toolless installation and removal. The grille plates are available in white, black, or red, or can be painted to match the room decor. The C-IC6 also directly integrates with the Tesira AMP-450BP — a four-channel “backpack” PoE+ amplifier — which reduces wiring requirements and installation time. The Desono C-IC6 loudspeakers are an ideal choice for any conferencing space that demands superior speech reproduction.