Dixie -

As much as I realize that you're trying, you're not making the grade here. Generally speaking even the serials of well known manufacturers don't mean much without additional data to support them. This because of lost records or multiple uses of the same number at different times over the decades.

Your gun is not well known. Further, I very much doubt that records exist as two world wars tended to reduce chances to nearly nothing.

Break your gun down by removing the forestock. You'll find proof marks on the underside of the tubes and often on the receiver flats under the tubes. These stamps will usually lead to a range of manufacturing dates and give us an idea of whether the gun was made for black or smokeless powder.

Past that it's photo time. Unless you can draw a clear picture of your gun with words, a series of photos is absolutely necessary. Engraving, quality of wood, general construction, condition... All details we need to see.

Clyde is correct as far as value. Generally three figures. $200 for a Belgian clunker, perhaps a bit more for a British trade item, and maybe $500 for a nicer example of a good shotgun. Only when there is something special will the value begin to rise past that point. This is why we need to see the piece.

B.

[Powder, Patch and Ball... Pennsylvania Rifles best them all.]