Kofod Larsen "Picket Back" Question  

I recently got a Kofod Larsen "picket back" living room set off of Craigslist. When I have seen these in the past I think they have always been described as being walnut, and I had assumed all of them were. These do look a lot like teak to me, but the original owner was not sure. I think I have seen some fairly red-orange walnut in the past, so I guess I am hoping that someone with a more experienced eye than mine can tell if there is anything about the grain pattern that might rule out walnut?