VD nite power cable??

I have 2 VD nite power cords and one has a metal mesh casing and the other has a I believe a teflon mesh. Did VD make two kinds?? can anyone let me know if maybe one is the first run??
Please help
Metal mesh is the earlier Nite model, sliver plastic mesh is the later model. Eventually a new Nite II model was released.

Unfortunately the metal mesh will begin to fray in areas that are repeatedly bent at smaller radius.
I have both as well. I think the metal mesh is cool, it reminds me of braided steel brake lines.