This is a solid heavy door knocker. Unsure of the metal make up because of patina, but a wonderful piece

This classic architectural design features a detailed, sculpted lion's mane with pre-drilled side holes for secure surface mounting onto a front door. The large circular ring loops through the lion's mouth and swings downward to strike a matching metal backing plate, creating a firm knocking sound. Historically, the lion head symbol represents strength, protection, and pride, and it has been a staple of traditional British front door hardware since the early 19th century.