19th century mirror from Brothers Henneberg, Poland, 1880s

Mirror produced between 1850-1875 in Warsaw by Norblin. It was made of plated brass and copper. It is preserved in good condition, it has not been silver-plated secondarily or subjected to any repairs. It is in an unchanged state from the moment of production. It bears traces of use. The signature is missing based on the marking part of the brass in the rectangle feel off.