For whatever this is worth, I don't believe the engraving to be aftermarket. The Ideal engraving pattern was changed to varying extents from time to time, and I have seen no less than 3 brass layout templates with different patterns for the Ideal grade. Also keep in mind that the least experienced members (and apprentices) of the Hunter engraving department were usually assigned the task of engraving lower grade Smith guns like the Ideal; another reason why one can expect to see differences in pattern variation, quality, and execution.