Gordian Knot or Loony Loop, vintage. Not sure how old this one is, but based on the type of string, the wicker-wood, and weird red plastic blobs on the ends, I'd guess it at over 70+ yrs. There are many, many versions of this floating around. This one measures at just over 7". Looks similar to the "Indian Cane puzzle" at the online Hordern-Dalgety Puzzle Museum.
US postage is $5.85, international $20.60. Postage will be combined for multiple wins.