I don't buy door knocker. It's pretty small and doesn't look like it could the knocker ring in its mouth. There are small nail holes on either side. I'm seconding rosette
I’ve vote drawer pull, especially if it could have held a ring like lairmo said. My mom had a chest with lion head drawer pulls, and I didn’t know I remembered this until I saw yours, but I distinctly remember flipping those rings up as a kid.