Pistol
Stan,
Any visible marks on this pistol? Also, what caliber and how many shots in the cylinder. It looks like a Marston Pocket Model - Third Type or Sixth Type, based on the Remington style solid frame with an octagonal barrel, the angled grip base, the rounded juncture of the grip where it meets the frame and the size and configuration of the loading lever pivot. If it is a Marston Third Type it should have both a serial number (1500-4000) and a barrel stamp "The Union/Arms Co.", and a five shot cylinder. The Sixth type would have a serial between 8500-10000, six shot cylinder, grooved frame top and a barrel stamp of "The Union/Arms Co." (one or two lines), "Western Arms Co. New York" or "Western Arms Co/Chicago, Ill.".
Just a guess.
TomH