This transcription is of an unknown concerto by François Blamont (1690-1760).
The opening movement is an Adagio for manuals only. This is followed by an extended second movement for manuals and pedal marked "Andante allegro". As a side note, I think this was probably the most technically challenging movement out of all the concerto transcriptions, and I'm still not completely content with the results here.. The final movement is a Pastorella for two contrasting manuals and pedal.