At first glance, this revolver appears to be a Whitney Two-Trigger Pocket revolver, but it is actually a very rarely seen improvement/modification of that revolver with a pawl linked to the hammer to rotate the cylinder and a new arbor pin. The design was patented by Whitney's employee Jeremiah Peck of New Haven, Connecticut, in 1854. It received patent 10,930 for an improvement in firearms on May 16, 1854, and was assigned to "J. Peck & Chas. F. Grilly" per patent records. The "Hartford Daily Courant" on December 8, 1854, reported: "A new revolving pistol, patented by Messrs. Jeremiah Peck and Charles T. Grilley, of New Haven, is now being exhibited in that city. The patentees, according to the Palladium, claim that they can discharge 24 shots in the time that the Colt pistol can six." How exactly that could be possible is unclear, perhaps by swapping multiple cylinders. The side plate on this revolver is neatly inscribed "Peck & Grilley/New Haven/Patented 1854." The revolver features a German silver blade front sight in a dovetailed base, etched cylinder, and gutta percha grips.

Fine with traces of original blue and otherwise smooth gray and brown patina on the iron, distinct etching on the cylinder, braised arbor pin, 70% original silver plating, aged patina on the silver and exposed brass, some minor pitting, and general mild overall wear. The grips are also fine with a chip on the upper left, some smaller flakes, and attractive aged "chocolate" coloration. The novel cocking mechanism needs work as it does not consistently engage the cylinder. The hammer and trigger function fine. Writer has never seen another example!