Evening gentlemen...
With respect to the CPMS lists of known notes they are a very helpful aid and base. But it would be unwise to use them as more. Remember, they only represent the notes that were reported to Bob & Harry plus auctions and dealer lists. Some notes have shown up twice in different grades - naturally, it was a higher grade the second time ! I understand there is a move afoot to publish these lists and that is excellent. It is critical, however, that new collectors know, like us old bags, that there are doubtless more notes of every type that are simply unreported. Some collectors are very secretive. It is a start and a great start but not difinitive so collectors ought to be wary of any use of those lists as being implied definitives in order to sell notes as " one of 5 known" etc. Many notes show up and not all get recorded - this very week I bought a Metroploitan Bank $10 of 1902, Moore signature. The catalogue says " no known issued notes" but that is not super-surprising. I have bought totally unlisted charters over the years. The lists are a work-in-progress and I am certain that neither Harry or Bob, nor the CPMS that publishes them, would suggest otherwise. I am sure they would all be aghast that anyone might infer greater certainty than the simple reporting they provide.
As to eBay sales as a catalogue pricing base there are extreme difficulties but need to be addressed. We all know that an eBay sale might not be concluded; the item might be returned, thus no real sale; often there are no grades even 'suggested'; we have no real knowledge of the grade of the note. Auctions and dealer lists have similar reliability issues but the Editor and others have a better sense of the certainty and reliability of other sales. How to consider eBay AND factor it is the challenge. That is Bob's challenge !!
OleDon