.36 caliber. 6.5" octagonal barrel. SN: 3587. Blued finish, color casehardened hammer, brass triggerguard, two-piece walnut grips. Double action percussion revolver with six-chambered smooth round cylinder, frame notch rear sight and half-moon German silver front sight blade. Barrel with three line roll mark that reads PATENTED SEPT. 14, 1858/REMINGTON & SONS ILION. NEW YORK. U.S.A./NEW-MODEL. Serial number on frame under left grip. Barrel number is 111 under loading lever. Rear of cylinder and grips are not numbered. A fairly scarce Remington revolver, it is estimated that only between 3,000 and 5,000 were produced circa 1863-1873, with many of the later production guns being factory alterations to .38 caliber metallic cartridge.