This is a pair of Seas Excel W17E002 woofers/mid range drivers. They are used and have been in storage for 6 years. As you can see in pictures, there is a bit of white dust type corrosion below the cones. I think its the coating substance below the cones having degraded in storage. There is no structural damage or impact to the cone movement. Item is sold as is. I tested both drivers and they are working fine.

Below a more detailed description of these woofers:
• Natural rubber surround and a new fiberglass cone, incorporating the latest cone technology to stiffen the cone and improve damping capability.
• Perfectly matched moving parts for a smooth, extended frequency response.
• Large magnet system for improved sensitivity and transient response.
• Heavy copper rings mounted above and below the T-shaped pole piece, to reduce non linear and modulation distortion and increase overload margin.
• Copper plating of the top and bottom plates and a solid copper phase plug, which enhance the performance of the copper rings and improve heat conduction away from the pole piece.
• Gold plated terminals mounted on a stiff bakelite plate to reduce contact resistance and improve reliability.
Stiff and stable injection moulded metal basket to keep the critical components in perfect alignment.