(lot of 6) Colt 1st Generation barrels, measurements exclude threaded section, some barrels do not have markings, five with blade front sights, all were originally blue finish, all estimated .41 or .44 caliber: (1) 5", address not visible, underside with serial number "71", caliber thought to be .44, bore semi bright, pitting, fair rifling; (1) 4", single line "Colt's Pt. F.A. Mfg. Co Hartford Ct. U.S.A., lacks front sight, marked at right, under side with serial number "6034" and near muzzle "C" over "S", estimated 41 caliber, bore semi bright, good rifling, light pitting; (1) 4", single line address in italics with + marks front and back of address, barrel underside with serial number "8688", bore semi bright, good rifling, light pitting; (1) 4.1/8", address not visible, serial number at barrel underside, underside with serial number "8724", bore semi bright, good rifling, light pitting; (1) 4.1/8", partial single line address visible, underside with serial number "3941', bore dark, good rifling, pitting; (1) 4.25", only partial address visible, underside with serial number "3764", bore dark, good rifling, pitting, for shipping longest 5.5", total of all 2.10lbs