Welcome Ryan,
You have a nice shotgun with a a great family connection. But your vintage Bertuzzi, while surely a great double, is much lower grade than the "Best" Bertuzzis currently offered for handsome summs, and its market value is consequently considerably less. Here in central Europe your Bertuzzi would probably bring under $1k; I trust someone else will tell you about its realistic value in the US. Or you can try your own research on Gunbroker, GunsAmerica, etc.
With kind regards,
Jani