Copper Free Mirror A copper free silver mirror is a type of mirror that does not contain copper in its reflective coating. Traditional mirrors use a silver coating that is backed with a layer of copper to protect it from tarnishing. However, copper can eventually react with the silver and cause the mirror to discolor. Copper-free mirrors, known as lead-free mirrors, offer several features and benefits compared to traditional mirrors that contain copper in their backing. copper-free mirrors offer a safe, environmentally friendly, and durable alternative to traditional mirrors, making them a preferred choice for various applications where quality, longevity, and safety are paramount.