This is the nicer of the 2 plates available from Arca Swiss, all one piece, not adjustable. Perfect for the Mamiya / Phase bodies. If you have an Arca Swiss brand head, this dovetail fits perfectly, with no adjustment.
I had this on my DF + camera body for 6 months tops, and then I sold the camera. This will fit the new Phase One XF body as well.
More or less new condition, with box. Free Priority shipping in USA.
$150
Link to the photos of the item:
http://www.marktomaras.com/arca#1