Old and personal work, I decided to use new (relative to skills which I had in 2015) skills to make this model more usable:
low poly version and UV map
textures (in Substance Paintre).
Update (2018): Textured in Substance Painter
3D view from Marmoset Toolbag 3
Orginal (2015) ZBrush model, rendered in Keyshot, overpainted in Photoshop. More like concept art illustration.
Old, test render from KeyShot
Old polypaint test render (ZBrush)
High-poly test shot (ZBrush)
Test render (KeyShot)
Work In Progress.
Work In Progress, more details added.
Work In Progress, 3D sketch stage