Larry,

A friend had a 12 bore that he picked up in Germany while in the army in the 60's.It was similar to this one, only his did not have side clips or cocking indicators. The one I'm looking at does not have the scalloped frame of the Royal and it's dated 1952. By the time the 1961 Shooters Bible came out, they may very well have dropped those costlier features.

Jorge