This showcase is made on blender and editable. Backside of this showcase has mirror looks really good with show pieces.
OBJ (OBJ, filesize: 1.38 MB), FBX (Autodesk FBX, filesize: 335 KB), BLEND (Blender, filesize: 1.45 MB), DAE (Collada, filesize: 1.15 MB)