This is quite possibly worthless, but a pair just went up on ebay claiming to be Arne Hovmand Olsen. No manufacturer given. Which doesn't seem very promising as a solid id, although stylistically, they do look like something AHO might have designed.
Maybe context the seller and ask about the design credit?:
http://www.ebay.com/itm/Pair-of-Stunning-Vintage-Danish-Teak-Oak-Chairs-...
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