Can you help me identify these chairs? [img link fixed]  

Hello,

I need your help identifying these 2 chairs. I bought these from a woman who had received them from a friend who collected mid century furniture. They both have the same carved marking on the seat "C.A.T.' The armless chair appears to be made from either black walnut or rosewood. The arm chair is either teak or black walnut. They both have the same spring seats and neither are stamped anywhere else. Any help would be greatly appreciated, as I have hit a dead-end in my own personal search. I have posted several photos below. Thanks so much!

<img class="wpforo-default-image-attachment wpforoimg" src=" http://old.designaddict.com/sites/default/files/forum/DSCN2869.