This is a vintage purple glass faceted fixed knob. It is a door knob or door pull, but there is no rotating mechanism. It is push/pull only. It could also be mounted to a wall and used as a curtain tie back fixture. The glass knob is 2 1/2" wide. Total length is 4." It is mounted on gold tone metal with an antiqued finish. There are three holes in the back plate for mounting. It is not marked or signed. There is a minor nick along the rim of the glass.