A bit of cross comparison between the NGC, PMG, and CGC registries

I don't know if the rest of you have ever thought about this, but the NGC registry has 6040 ranked members (and remember that you have to have at least 1 point worth of coins in order to rank). CGC has about 1860 and PMG limps in with about 180 ranked members.

Is this any indication of the relative popularity of the hobbies? Is it more likely a statement as to which groups are most likely to get their collectables encapsulated and then join the registry? Or is it that the Certified Collectables Group is just much more strongly associated with the NGC brand? I've been looking around a bit and the market for PMG graded notes seems every bit as vibrant as that for NGC graded coins. So why are there 33 members with a coin registered for every 1 member with a note? Why is there 3+ coin collectors on this site for every 1 comic collector?

I've recently joined those with a foot in 2 camps, but I'm stunned by just how much bigger the coin community is.

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