This is a factory sporter barrel with original finish. It was manufactured between the years 1957 and 1963, based on the #7 sight ramp with 18 lines.
Bluing - 90% with some overall thinning of the bluing and muzzle wear.
Metal - Very good with small nicks at the rear sight boss.
Bore - 6/10 borescope verified with some wear and light pitting. This barrel still has plenty of life remaining, but is not perfect.