I disagree. This isn't some Parker where the collectors would rather hang than have one restored properly. It's a well made Scot gun and it's appropriate to have things maintained properly. Apparently it hasn't been in for maintenance in a good while, so it becomes more of a "restoration" in some eyes.[No offense OWD].
That said, the process of re-browning the damascus should not effect the silver plating at the breech, and I believe all damascus should show contrast to its full potential. The trigger guard is no problem. The wood should not be either, unless the dents are worse than described. I live a day away from you, central Indiana,but it's a long day to go both ways. I've also got a friend who can probably handle the gold inlay, but a picture of what's needed would help on that. PM if you'd like to discuss this further.
Jim