This is what I took while playing with the new Principled BSDF, using Carved Wooden Elephant from Poly Haven.
edit: some scene adjustments, rendered in AgX instead of Filmic, added masked Coat variation
Base layer only:
Sheen as dust (using a mix of normal direction and procedural textures as mask):
Sheen + Coat (with its own normal using voronoi texture):
Sheen + Coat + Emission:
Sheen + Tinted Coat:
Sheen + Tinted Coat with mask and border normal by noise texture:
