TP,
A few months ago, Thad Scott had a Dutreuil 20 ga sidelock made in Liege (unfortunately, the bores were pitted and oversize) .
That one was signed "Dutreul a Epernay" which is a small town located in the center of the Champagne area.
The "Vitry" mentionned is likely to be "Vitry le Francois" or an abbreviation thereof. That town is close to Epernay. It mght have been the same Dutreuil or close family.
As usual, Dutreuil was almost certainly a dealer who ordered guns engraved with is name.
I have no idea what the Diard and Aine mean.
Pictures would explain a lot.
Regards,
WC
