This is an Eight Issue revolver manufactured in 1865-1873. This design was also manufactured by his successors, Forehand & Wadsworth. It has blade and notch sights, "ETHAN ALLEN & Co. WORCESTER. MASS./ALLEN'S PATS SEPT. 7 NOV. 8 1858. SEPT. 24 1861" on the left side of the barrel, the serial number and "B/*" on the bottom of the barrel, nearly full coverage scroll and geometric engraving (only the hammer and lower areas are plain), smooth mother of pearl grips, and the matching serial number under the left grip on the front strap and the rear face of the cylinder. It comes with a scarce "pipe" style case.