Some of the most beautiful work of this craftsman, and many others, are in this book “Liège Gunmakers through their Work. 1800 - 1950”.
For more detail see: LIEGE GUNMAKERS
      
Francotte
Here’s a pinfire revolver of which the hammer has no 
crest, so simple action.
The trigger is foldable.
Note that the body of this revolver is still inspired 
by the boot systems dating from flint and piston guns.
The markings
ELG on star in vertical oval: accepted, in use between 1846 and 1893
z crowned: countermark of a controller between 1853 and 1877
AF crowned: 
one of the many trademarks registered by the company 
Auguste 
Francotte.
GP
About this house, see the new book “The 
Francotte Dynasty”.