This wire is being used on a 1930s sewing machine. The original wire was a flat cloth covered parallel cord, but the internal conductors were ALSO cloth wrapped over rubber insulation, one solid black and the other black with a white tracer, which makes the cord somewhat larger. This, cord, appears to be just zip cord wrapped with a cloth cover. I am not certain if the modern rules would allow a closer duplication of the original wire. I realize that I am trying to restore as completely as possible, not just get the flavor of the original. Other than that, it seems to be somewhat authentic looking.
Love it! For my lighting project I had to feed wires into one another, and was worried about having to cover up the spots I joined. I was able to pull back and push the cloth back around the wire. Very cost effective!
Cloth wire is a very simple yet elegant way of having what are normally ugly cables all over the place. These are being use to suspend pendant lights (with a black wire supporting the weight of the light).