Overall length 48.75"; barrel length 33"; caliber .58. Markings: representation of a Confederate flag ("Stars & Bars" ) and "COOK & BROTHER/N.O./1861 (or) 1862" on lock; same usually on barrel together with serial number and "PROVED" near breech. Rifles in the early production have long range rear sights and unusual two piece block and blade front sights as well as an integral bayonet lug with guide on right side of barrel. Later production utilizes a brass clamping ring for the bayonet, a block open rear sight and a simple block and blade front sight. Earlier production will claim a premium if in good condition.