the twisted fiber is someone's idea of a repair , to the unraveling bundle coil , that I've never seen before.............on any North American 1st Nations woven basket.
I agree with komo that the cordage around the edges is probably repairs. I don't believe that coiled conical shape is typical of any Native American (North, Meso, South or otherwise) basketry, either. It does not look like palm fiber stitching. It is hard to tell from the photos, but are the coils somewhat flattened, or are they round? If flattened, I would look more toward North or East Africa.
I would say the coils are mostly round / were originally round. And I agree that the shape does not correspond with the things I've seen made in North America. It seems to be grass within the coils, but perhaps something else wrapping the coils. That the rim and base twine-like wrapping was separate from the original construction never occurred to me, so thanks for that. Since that's what I was trying to research, that may be why I wasn't getting anywhere. Thank you for your feedback!
I should have clarified that round coil bundles don't exclude an African origin, but flattened ones are quite characteristic of that region.