It seems to have been customary amongst the rich in Victorian times to have your individual sheets stiched into personalised leather covers.
I have bought a few of these from Antiquarian book dealers and the vast majority contain works by Herz, Hunten, Czerny, Favarger, Bertini & Leybach along with anonymous easy transcriptions of operas and popular tunes of the day. You might get a single movement of a Beethoven, Mozart or Clementi sonata, but never the whole thing.
Thal