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
Sarolea Joseph
Unfortunately, this weapon bears only one mark: Acier Fondu / J. SAROLEA.
Probably
an excess of "restoration" will have removed the markings of the proofhouse !
The Who's Who of the Liege armoury tells us that Joseph SAROLEA, well known, lived in Herstal. It began around 1850 the manufacture of weapons and weapon parts, here is the first weapon marked SAROLEA that we meet.
He then manufactured bicycles from 1892 until his death in 1894.
Then the company produced world-famous motorcycles until around 1963.
Here's a good example at the end of the page.
Et voilà une des motos Saroléa