I could be wrong on this so don't take it as gospel, but I believe the 1954 models would've came factory drilled and tapped for scope mounts. In 1952 they were not, in 1953 they also were not, but the 1953 BDL model that we now call 5 diamond was drilled and tapped, and I believe by 1954 they all were, but I could be off by a yr or so on that.

One is alone in a land so vast, there is only the mountains, the wind, and the eyes of God.