Trial with Environmental lighting.

Simple old model, no maps or prop
2.77b using adapted hdri add on and free low light level 360 hdri texture
makehuman and assortment of pbr textures for trials.
No use of external programs or UV mapping

I am using cycles
the materials are highly reflective and cause some bizarre
artefacts when rotating the model and the shadowing is ineffective
or appears non existent.
Any suggestions in handling this type of material on a complex shape welcome.

Regards Blobs