Exceptional and rarely seen. 
These are the complete orchestral parts for a Symphonie Concertante for 2 flutes and orchestra in A Major by Antoine Tranquille Berbiguier – unavailable anywhere else. All the parts have their original red cover and blue ribbon bidings, as well as the original box 
Not so different from what I do, in the end !
It’s a shame that the two solo flute parts are not included, and not to be found anywhere either. But the day they make surface, this music will be complete !