The 4barrel looks like an imported gun maybe France or Belgium , the little pocket revolver they were made by a lot of different gun makers 100 years or so back. I have about 6 and most are in the same condition as yours , I wouldn't shoot to many rounds out of either , the lock up on those old cylinders don't line up to good and have lots of space between the barrel making for lots of lead frags that can really hurt. If you shoot one in the dark you'll see what I mean. There probably not worth much but make nice wall hangers .