Nice Marston & Knox double-action pepperbox pistol. This one is in really nice shape. Produced in New York City during the 1850’s. Six-shot revolver in .31 caliber. 3 1/2 inch ribbed barrel on this example. Barrel is clearly stamped “Marston & Knox New York”. The engraving’s are a bit worn. Grips are in super nice condition. The trigger and hammer assembly work perfectly. The mechanism for the barrel rotation is however broken and you can rotate the barrel by hand. Nice aged and uncleaned patina on this one. Neat little pistol.