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
This is a rather common piece bearing the known punches of BE.
The BJ stamp could perhaps belong to:
BULTOT Jean de Mortier who registered two patents i.e.:
In 1897 – a revolver safety.
In 1919 – a slaughter-house gun with extractor.
The last patent corresponds to the date 1922 same as appearing on the gun.
Without the patent papers, I can't certify that it's the same gun.
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