This is a .243 Winchester Featherweight barrel. The manufacturing date is not legible; it may be 1953. It has the number 5 front sight ramp, indicating it was probably manufactured around 1954.
Bluing - 90% - The bluing on this barrel is dark and even but has wear near the muzzle and a spot on the top of the barrel.
Metal - Overall, this barrel is in very good condition; there are some a few minor scratches and one very small, freckled spot.
Bore - 8/10 - There is some light wear in the throat but no pitting in the bore. There are no signs of other metal damage. Borescope verified.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE