3D model render order looks odd/broken model from Camera

From the screenshot, the scene looks good but after through the camera, the game view looks odd for such
simple 3d model.
The model looks broken but it is actually "flipped" inside out and the render order looks odd.

I have changed the player setting "rendering path" from Forward to Legacy Vertex Lix
I guess it is related to this issue but I change it back to forward, nothing happens.
Please kindly help, thanks!

 

Looks like the model itself has some normal problem.
Try to normalize normal on 3D software and import back should help.

 

Thanks for your advice. However, I have no such issue in another computer (mac and windows)
with the same version of Unity3d Pro 5.2.1
I guess there is something wrong in my project/quality setting

 

Would you mind to send me the present model (obj / fbx) to check?

 

Thanks I m in vocation now
Will send you afterward

 

Is the model scaled?

 

Yes but the problem is there is no issue in other machine; we have not sync unity setting
So I guess it's the possible issue

 

If the scale is negative it can cause models to flip inside out. Normally Unity fixes this with a hint passed to the shader, but it's possible the vertex lighting mode doesn't have this fix in place.