$15 proton logo 3D model by 3dlogoman. Available on CGTrader with 24928 polys and 24930 vertices. Check it out on CGHub.
STL (Stereolithography, filesize: 722 KB), OBJ (OBJ, filesize: 647 KB), 3DM (Rhinoceros 3D, filesize: 596 KB), 3DS (3D Studio, filesize: 354 KB), LWO (Lightwave, filesize: 413 KB), MA (Autodesk Maya, filesize: 627 KB), HRC (Autodesk Softimage, filesize: 898 KB), C4D (Cinema 4D, filesize: 403 KB), FBX (Autodesk FBX, filesize: 693 KB)