Jonathan:
I don't think it is a fair conclusion to say "less printed". Certainly, there are variations in the set, which complicate scarcity. But the reality is that for the vast majority of subjects in the set, there are less than dozen two examples around. Why so few were kept? Who knows. Why the ones that were kept seem to include some commons more than others? Again -- hard to say. But given the overall scarcity of any subject from the set, speaking relativeness is perhaps quite futile, as one small find can heavily influence all outcomes.
m
|