Colt 1861 Navy 2nd gen 1300 series $old by Dave Thomas | Sep 9, 2024 | New Guns - Southern Oregon, New Handguns - Southern Oregon, Unused NIB Guns, Used Guns - Southern Oregon, Used guns - Southern Oregon | 0 comments This brand new in the box original 2nd gen colt would make a great addition to you ever expanding colt collection. The term Navy refers to the caliber which is 36 between the pocket pistol at 31 caliber and the 44 caliber colts.