Sampo Rosenlew Combine (Polygon mesh 3D model) is available on CGTrader for $139. Original author: 3D-Horse. Specs: 1140879 polys, 1162925 verts.
OBJ (OBJ, filesize: 62.5 MB), 3DS (3D Studio, filesize: 26.2 MB), LWO (Lightwave, filesize: 26.6 MB), C4D (Cinema 4D, filesize: 23.4 MB), MAX (Autodesk 3ds Max, filesize: 67.7 MB), MA (Autodesk Maya, filesize: 48.1 MB), HRC (Autodesk Softimage, filesize: 35 MB)