ID Leather Couch and Chairs Set - Possibly Late '60's or Early '70's?  

Hi, I'm hoping someone can help me identify this leather couch and set of 2 chairs. Both the couch and chairs are upholstered in leather, with a back wedge cushion and an overlapping cushion on top of the wedge cushion (see photos), The overlapping top cushions are stapled directly to the top of the wood frame. The couch/chair frames are solid wood, and are extremely well made. I've looked for a maker's mark but haven't found anything. There was, at one point, an identifying paper tag stapled to the underside of all three pieces, but of course that's long gone. Thanks in advance!
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