One of approximately 3,300 manufactured from 1864 to 1872. Standard Marston markings on the left side of the frame along with "IMPROVED 1864." A firing indicator is on the right side of the frame. The barrel cluster and both grip panels are numbered to the gun.

Fine, retains 30% plus of the original blue finish on the barrels with the balance a smooth grey patina and some scattered light surface pitting. The frame shows an attractively aged brass with crisp markings. The grips are also fine with some scattered light handling marks. Mechanically excellent.