Very Nice Jacob Kline buck & ball Long Rifle with a Frederick Sell Bird inlay. Jacob Kline was from Frankford Township, Cumberland, Pa. Latter at Littleton Pa. Listed as gunsmith from 1811-1821 in Harrisburg, Pa. Frederick Sell gunsmith was known for his unique style features on his guns. One style being his Bird plucking feather from its wing. This buck & ball long rifle has the bird inlay above the fake patch box. Sell also did cheek rests. Sell did patch boxes & inlays for other Pa. gunsmith's rifles & this long rifle looks to be one of those guns. The long rifle is 59 1/2" overall with a 45 3/4" part octagon & part round barrel. Bore looks to be over .50 cal. This rifle has great brown patina with smooth metal. Rifle may have been flintlock configuration & later percussion. Barrel is marked with J Kline on top & has fixed rear sight & brass knife blade front sight. Flat Lock plate with floral etchings & stamped Warranted. Hammer has small floral etchings Hammer will hold back but mainspring has a crack so when you pull the trigger it won't move. Brass side plate with single screw. Brass roman nose cap with nice mellow patina as do the 3 thimbles which are holding what looks to be the original wood ramrod. Brass trigger guard with great patina. Brass butt plate with floral etching & extra piece at bottom & brass plate on bottom of back stock. Nice tiger striped full length stock with brass plates starting larger at back & get small as you go forward on stock. Stock has small very thin crack in forearm.  Back stock has a 5 1/2" fake patch box which also could have been made by Sell. Larger brass Sell Bird above. Thin strips of brass makes up the rest of the patch box, Cheek rest has thin brass ornate design which there are a few of the brass thins pieces missing. A nice Pa. Buck & Ball Percussion Long Rifle with maker's name & Frederick Sell's Inlay Bird.