This is a FCS-only head mold. It was released in October, 2005. Since its release, it has become overwhelmingly popular as both a boy and girl. The recommended eye size is 18/9mm - 16mm is said to be a bit too small and show a gap in the area surrounding the eyes. Originally this headmold was Sato only, but it was added to the Tenshi no Sumika lineup on September 15th, 2012.
Please click on the individual thumbnails to see the pictures full-sized.