Picked up this little gem along with a few others a few days ago. It was found in an old house that was being torn down. After a little cleaning, this is what it turned out to be.The only writing I can find on it says Deringer with Philadelphia wrote under that. A very small gun that looks to be in about a 36ish cal. Does anyone on the forum know anything about these types of guns? Do they have much value? Here is some pics.