This is a .375 H&H magnum barrel dated 1938. This barrel was previously re-blued, without removing the rear sight. Consequently, the portion of the barrel under the rear sight is unblued.
The metal is in excellent condition, without dings, gouges, rust, or other damage.
Bore - 9/10 - The bore has no wear in the throat, but there are just a few scattered, shallow pits. Borescope verified.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE