Marco's Comments:
Lot 222 of Potter & Potter Gambling Auction (29/1/2011).
Proof of the 3rd volume on Robert-Houdin, the copy Fechner sent to Richard Hatch to revise. It's signed and contains two signed letters about the book and Fechner's R-H search. The book is a paperback (the published edition was hardback and with another volume containing reproductions of Robert-Houdin's memorabilia from his show.
This book contains the explanation of Robert-Houdin's tricks and his theatre, with photos of Robert-Houdin's apparatus. It is very interesting and excedingly well researched, with great illustrations by James Hodges.
The trade edition of the book(s) sells for EUR 500.