This is the smallest Peanut Size 41 caliber percussion Henry Deringer. The mechanical function is very good and crisp. The amount of finish retaining is about 75%. It has to gold bands at the breach end. There is the number 12 at the tip of the trigger guard at the butt end of the grip. All of the markings are very good. The barrel length is 1 and 5/16” from the muzzle to the first gold band. The overall length is 4.125” long.