The model has real world scale and can be further subdivided without problems. For the preview images it was subdivided one time.
All used textures and maps are included: one texture / diffuse map, one glossy map (invert for roughness), one subsurface map, one subsurface colour map and one normal map. Every image measures 4096 x 4096 px. UVs are unwrapped and everything is named properly.
Do not hesitate to ask any questions.
BLEND (Blender, filesize: 19.2 MB), OBJ (OBJ, filesize: 19.1 MB), FBX (Autodesk FBX, filesize: 19.2 MB), 3DS (3D Studio, filesize: 19.1 MB), ABC (Alembic, filesize: 19.1 MB), PLY (Ply, filesize: 19.1 MB), STL (Stereolithography, filesize: 19.1 MB)