i have a bunch of original samples.
they all are a cloth with a black coating. most (if not all) of the originals i have are not canvas.
canvas can be identified by its weave. canvas is a plain weave.
the black coating on most looks like a rubber coating.
on others its a very thin (almost like a black die) coating.
i have some with a rope bulb and others had a rectangular insert.
the intersecting pieces are either connected with a split rivet or more common was copper wire.
i have found some that is very close to original that i should have for sale soon.
beachwood has some listed but its the wrong stuff, or at least i have never seen it before.
https://www.beachwoodcanvas.com/images/productimages/group17/SC1732.JPG
