Origins not perfectly correct. Some of the preview images show the model upside down. Made in Blender 3D using several different modeling techniques , then it was converted to mesh. Blend file includes the lighting setup seen in the preview images. Blend file materials are shades of gray with specular changes. OBJ file comes with a MTL file. OBJ file materials are just shades of gray. Has edge split applied in OBJ file so it does contain vertices that occupy the same area, this is to add sharp edges to an otherwise smooth surface. Blend file comes with 3 lights and a camera.