I would tend to disagree on the grounds that the Charlton guide serves this purpose quite well, as do more frequent publications such as the CPMS newsletter, and various dealers' price lists.
Plus, where's the fun in a treasure hunt if you're already given a map and there are signposts all along the way?
Logged
BWJM, F.O.N.A.
Life Member of CPMS, RCNA, ONA, ANA, IBNS, WCS.
President, IBNS Ontario Chapter.
Treasurer, Waterloo Coin Society.
Show Chair, Cambridge Coin Show.
Fellow of the Ontario Numismatic Association.