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
ALBERT SPIRLET
Revolver velodog hammerless with folding trigger, loading by side door, unloading using the rod being used as axis of barrel, grips with little palms way ebony squared
Punches
They are those of the proof house of Liege is:
Spangled ELG in a crowned oval: acceptance post 1893;
P and AD spangled: countermarks of the controllers post 1877;
PV surmounted of a stylized lion: test with the powder lives post 1898
The manufacturer:
Crowned could be Albert SPIRLET. (evoked on the site) the interested party made use of several marks as HAVE in a rhombus lying and crowned - ACE in a rhombus laid down without crown - S in a rhombus lying and crowned.
I am unaware of the significance of D encircled!
GG