Mine was made after the transition to double heat treat in 1917. ;) It was a righteous old shooter.
Got a 100% 1942 M-1 to replace it. It has the uncut op-rod. Don't shoot it much. Saving it for hard times that I hope never come.
I had a "red" handled version M1905 bayonet for a while but somebody needed it a lot worse than I did, they offered and I accepted.