I have a barrel that resembles that one on the starter post. It came in a paraffin sealed, canvas bag packed in grease. I bought the barrel from International, out of Montreal. If someone is interested, I can take a pic of it. It is now mounted on a Martini and with the help of a fitted sleeve to mount to the receiver, is chambered in 30-40 Krag, which I load with .308 diameter bullets.
The hammer finished exterior and taper are identical. Now, all of this happened in 1980. The barrels were on a special offer of $30/barrel. Being newly married and buying my first house, made even that paltry sum a bit of a stretch at the time. The barrel didn't have any stamps or knox areas on it. There was a tag on the bag, but it was so soaked in grease as to be illegible.
I remember, when we fitted it, the steel was extremely hard and difficult to machine/ream, even though the reamer was new and sharp.
I was also lucky enough to pick up a new in white No 1, and another 7.62x51 bbl (Palma Match chambered), again without stamps for $20 each. I wish I could go back and take out a loan or renegotiate my mortgage and bought all of them. There were several hundred of each. Alan Lever bought 250 of each at the time. They didn't last long.