It is a twined basket, like Makah baskets, but it isn't Makah. The Makah use cedar and beargrass, and this isn't made from cedar. A Makah basket also will have a plaited (checkerboard-like) start, and this is made with a circular start.
The material used is the first clue to identification, and then the construction technique. The way this is simply cut off at the top, indicates that is was probably not made for actual use, or in a traditional way. An authentic Indian basket would have a finished rim, that wouldn't unravel with use.
You have nice, clear photos, but I still can't determine what the material is...only what it isn't. And the combination of material, construction technique, and form, doesn't appear to be anything used by traditional Native American basket makers.
