The "Big Colt", as it was sometimes known in advertising of its era. Chambered for .41-caliber rimfire or centerfire and is so marked. Large caliber of this variation makes this the most desirable of New Lines to collectors. Approximately 7,000 manufactured from 1874-1879. A 4" barrel version would again be worth a 100 percent premium. NOTE: Prices are for nickel finish. Blued models will bring a premium of 100 percent.