Unknown armchair  

Another pic..

No sign or mark underneath.

Are you in Germany? It looks familiar to things I've seen sold over there.

Forgive me, I was thinking of this I think

https://modestfurniture.com/design/armchair-in-teak

 I wanted to say Casala, but searched it instead and I think I've seen a lot of these in the German market and thought they were similar when it in reality they're not. 

@kyle-barrett Yes, I am from Germany. The chair doesn't look to me like Casala, but as you mentione, indeed I see these chairs frequently here in Germany and it might be a German producer e.g. Lübke or so.