Antique revolver cigar cutter watch fob . This little gun is really cool , they were used for cutting a cigar by inserting the cigar tip in the chamber and pulling the trigger and you would then open the door below the barrel to empty out the clippings . The trigger is not working more than likely spring related , you would have to pull back on the hammer manually . Made out of nickel with a brass finish , has its loop on the bottom of the handle where a pocket watch chain would attach.