Clay, sorry to say this site is not about giving appraisals on guns. First it would be unfair to you and also could be unfair to the buyer. There are many things to consider in appraising a gun. The most important is condition, plus everyone is going to give you a different price. The only way is to look at different auctions on guns and find one like yours in the same condition. If it is surface rust, not too bad, pitting is the worse. In old black power guns like yours, if not cleaned the powder ate at the steel inside the barrels and is not a good thing. Your gun falls into the serial number range that dates from 1878-1884, they produced 8,305. If your gun is an A Grade, the lowest grade made then, in 1884 it cost $200.00. The highest grade was F. After 1884 the grading went the other way, AA was the highest and F the lowest. Blue Book of Gun Values 26th Edition at 80% condition $450.00, 50%-$350.00, 30%-$200.00. Now you just have to find out what % yours is. Also the designs on your barrels are from the way the steel was wrapped to make the barrels. It is called Damascus, and that is in different grades also. Good luck and keep us posted.