Tupolev ANT-20 Maxim Gork Low-poly 3D model is available on CGTrader for $15. Original author: Helijah. Specs: 37000 polys, 39000 verts.
STL (Stereolithography, filesize: 3.26 MB), OBJ (OBJ, filesize: 3.34 MB), BLEND (Blender, filesize: 7.22 MB), GLTF (glTF, filesize: 2.48 MB), FBX (Autodesk FBX, filesize: 2.1 MB), OTHER (Other, filesize: 5.85 MB), PNG (PNG, filesize: 1.05 MB)