VL&D had a nice line of Francotte Guns,from that Knockabout up through several lovely sideplated BLs,all I have see were VL&D.
Have seen soe nice Slocks too, but not in hand, not sure if they were VL&D.
All the few Francottes I;ve had were from 1904 thru 1930.I wonder when they started importing them?
Perhaps the earlier SD&G had them too.
There is a guy here , Bob Beach I think, he has access to some Francotte info, & has been very help full to others in the past.
Id stick up a seperate post for him, to make sure he sees it.
Good luck with your search for info,
I am a big fan of good Belgian Guns
cheers
Franc