Manufactured in 1882. The barrel has the one line Hartford address on top with "45 CAL" on left side of trigger guard. Nickel plate with niter blue trigger, screw heads and hammer (polished sides) and fitted with checkered Rampant colt grips with a lanyard ring on n the butt. 1,857 .45 caliber, nickel plated Model 1878s revolvers with 5 1/2 inch barrels were manufactured by Colt.