This is a limited item for the art book "Code Geass Model Works". Pre-order period was between June 30th and August 24th last year. The price is 8,500 Yen (excluding delivery and handling fee).
This is one heart aching Robot Damashii [Side KMF] release for fans of the Knight of One I believe. ^^;
Images are from Futaba Imageboard.
A more detailed review can be seen on Hacchaka.