For Sale FS: Is this a Deardorff lensboard adapter?

This metal lensboard adapter has exactly the same outer dimensions as a Deardorff board with rounded corners. It does not have the plateau on the back like the wooden Deardorff boards, but is exactly the same thickness as the original, not considering the plateau. It has two ridges on all four sides. The raised portion measures 115mm square, and the hole has an 86mm diameter. There's a 6mm wide light baffle surrounding this hole. Please excuse the dust on the photos:
http://picasaweb.google.com/104131518494734389012/Deardorff?authkey=Gv1sRgCKbO5d_nmrzXjQE

9,900 JPY / ~120 USD including EMS shipping.

Thanks for looking,
Kumar

For a Calumet C-1?

I believe it will fit a Calumet C-1 also. Offers?

Kumar