I knew this shotgun had been handed down through the family. I guess it wasn't until I did a little research on it, did I realize just how far back in our family history it went. It was, at least, my great grandfather's shotgun from the manufacturing date (as my grandfather was born the year it was made) and possibly my great, great grandfather's. I'm still researching that possibility. Our family had a rather large farm in Hampton Roads, VA after the Civil War and at the turn of the 20th century.
Like the other two long guns (included a Winchester rifle), this one showed a degree of exterior rusting from storage in the basement rafters/floor joists after my dad hid them away sometime in the 2007-2010 timeframe. Prior to that it was either stored on the gun rack in my bedroom, in my (former) bedroom closet or my dad's bedroom closet. I have removed much of the exterior rust on the barrels with a copper penny, a copper brush, and some CLP and/or Kroil. Looking down both bores, they look clean and running the cleaning tools down the bores, they show up clean as well. I don't know what my dad did before he put them up, but the internals look good.
The stock is in really decent shape showing what I would consider normal wear and tear for a shotgun that was evidently well used in the first half of the 20th century. A good amount of dirt came off with the application of a damp rag and wood soap. The knurling on the fore-end shows some wear. There was considerable buildup of oils and dirt in the grooves of the knurled surface and the initial cleaning helped remove some of that buildup. But it also appears as wear from gripping the fore-end. It is the original because, like everything else, it has matching serial numbers engraved in the fore-end.
A few photos of what I started with:

Rusting was confined to the right side of the shotgun (mostly but not exclusively to the barrel)

More barrel rusting. Again, right side only. The left barrel appeared to be rust free.

The shotgun's serial number on the tang / underside of the half-pistol grip. A couple of rust spots visible. The lookup table indicates an 1898 manufacture date. That happens to be the year my grandfather was born. This shotgun was purchased by either my great grandfather or great, great, grandfather. Either way, it has been passed down through our family.

The left side of the breech block. The left side and left barrel of the shotgun seemed to be rust free.