Anyone know about this dang cool chair?  

Nice Find
It is one of my favorite 50s Thonet designs, although I have yet to score a set for myself. They are not particularly valuable but I like the vibe. They made a more common variation without arm rests, but I prefer your upscale model. I am a sucker for bent plywood.
Classic Modern by Deborah K. Dietsch has a photo where a set of six or eight of these are used as dining chairs. I believe the photo was taken in a Marcel Breuer or Raymond Lowey designed house. I don?t have a copy nearby and so I can?t be sure.
Congratulations on a great find

It's a beautiful chair
and I think from now on, we'll refer to it as the DANG chair.
Dang great name for it!
You take a look at it and say "Dang!"

dang it!
if i remember correctly, the chair is designed by joe atkinson for thonet.