Grahame-White Type I / Windham Biplane N°2
This was built by the Windham Detachable Motor Body Co. in 1910 for Grahame-White for a planned London-Paris flight that never materialized. The designation "Type I" is given as such in a Schiffer book.
Grahame-White must have considered this his first "design" because it was built to his order and incorporated some changes of his own.