I am looking for a 1951-1953 factory 375 H&H barrel for a pre 64 Win 70 in original finish. The barrel would be marked 375 H-H Magnum and have an integral front sight ramp. It is possible for a 1950 to fit that description as they stopped using 375 Magnum as the caliber marking at that point. A 1954 may or may not have an integral front sight ramp and may still be a lapped barrel but the 1951-1953 would have all the features I am looking for.