This antique, steel framed, stained glass window was once a transom over doors or a large window. Steel frames like this began to be used in architecture in the era of the Eiffel tower, as it is strong and light looking. Wood in contrast would have to be much thicker to support the weight of the glass. The design was painted on the glass with mineral pigments, then fired in a kiln before being leaded as a window. It came from an important building as evidenced by the detailed work of a classical design of swags, flowers and ribbons on a textured clear background with amber border glass.