Flower Mortice Door Knob 3D model is available on CGTrader for $6. Original author: Polygate2. Specs: 5160 polys, 4867 verts.
OBJ (OBJ, filesize: 105 KB), FBX (Autodesk FBX, filesize: 218 KB), BLEND (Blender, filesize: 170 KB), C4D (Cinema 4D, filesize: 165 KB), MA (Autodesk Maya, filesize: 168 KB), MEL (Maya Mel Script, filesize: 168 KB), MAX (Autodesk 3ds Max, filesize: 3.1 MB), 3DS (3D Studio, filesize: 57.3 KB)