You will have to call Browning.
Possible.
You will have to contact Browning.
A. Marchal was a Master engraver with Browning Arms in the 50s/60s and engraved numerous Diana Grade Superposed Browning shotguns as well as high end Browning rifles.
No list of all the engravers has been published.
You will have to contact Browning.
Reccomend that you contact Browning.
Famke Janssen's birth name is Famke Beumer Janssen.
Kitty Janssen's birth name is Janssen, Catharina Thecla Maria.
You will have to seek a qualified appraiser. Values will vary based on the type of engraving, inlay(s), and name of engraver.
It if was done by the factory, it might be Master Engraver Jules Lwanczk.
Saint Arnold Janssen, SVD was his full name.
Engraver