[Cozumeleno]

My immediate inclination was around 75-100 and that's nothing more than a wild guess. I would say there are around 400-500 Demmitt/O'Haras (I think there are more than 300 just because about 250 or so of each are in the pop reports). And while I think a good bit more are at 500 or so, I'm not sure how many are at 520. For example, the Monster Number post has 27 at 520, but more than double that at 500 or more.

I do think there are a good number of sets unaccounted for from older collectors that put them together and have basically sat on them ever since. But I also think there are several that have probably been broken up and sold.

To the point about the Wagner owners, I see that as more of a specialty collector. I think many that own them couldn't care less about the set and are really just in it for that one card. There are exceptions, but I wouldn't be surprised if many of them only had the Wagner or the Wagner and other Big 4 cards.