HomelessjOe, thanks for your reply.

For non-experts like me, Armchair Experts are better than nothing! haha
Will keep posting for sale here in mind as an option, but not great with photos and unsure how to manage offers.
Parting out on Ebay is an interesting recommendation, but taking the shotgun apart, setting prices on the parts, determining shipping amt, etc is above my pay grade!

To get a reasonable/fair price, still assume auction is the best option for someone like me(?)
The guy who evaluated this and other guns recommended a shop about an hour away that would post/sell them online. Thought the local auction house may be a better option(?)
Looking for the most convenient way to get a fair price for my mother/not be taken advantage of -not looking to squeeze every last $, just need to be in ballpark for a fair sale price.
No support here for selling via the nearby auction house that does "Sportsmen Auctions" that appear to have mainly shotguns/rifles -that would be a mistake?

Any armchair experts that want to let fly with estimates on value and how to are welcome!