This Grande Etude Galop is very similar to Gottschalk's Tournament Galop (the last piece of the Dover Gottschalk's selection). I think Quidant's piece is more interesting, and I believe it was the original piece. It was also called Mazeppa in some publishers's catalogs. It is not clearly said where to jump to the Coda after you have resumed playing at the repeat sign, but it is likely to be at bottom of page 4. Jean-Pierre Coulon