This is the Wave Desk by Offi in the color Walnut. The surface of this beautiful modern desk is made from a single sheet of bent plywood, creating a rounded wrist-rest, monitor stand, and a place to tuck away desk items.
Dimensions: 24.5"d, 40" w, 29.5"h (main surface) / 35"h (fold-over shelf).
We purchased it new a few years ago (it retails new for $999, http://www.offi.com/products/tablesanddesks/WAVDSK.php?p2c=300), but we moved and no longer have space for it.
It is in great condition, with the exception of a very light cup ring stain on the left side (the flash in the pictures make it stand out more than it does in real life).
Email me for more info. Thanks for looking!