I can tell you why I want them, and maybe you can give me a hint of what I need?
Specifically... for my site, I need old pricing data so I need books like Remick (I have the third edition only) with extensive listings, and coin prices in a usable form (e.g. not "between 1 and 10 pounds depending on grade", as some books tend to have).
I put these into a CSV, then import it into the site, mangle the data with some basic arithmetic (e.g. apply inflation data, then make a linear regression), then generate price graphs and trends. You can see an example here: https://onlinecoin.club/Coins/Country/New_Zealand/Half_Crown_1940/ for the NZ Centennial Crown - note the tables and the graphs, and see FAQs for background.
Currently, I only have these for New Zealand (thanks to the publishers of the John Bertrand catalogues allowing me to use their data) and a handful of others, but I want to expand to all other countries. The site is under construction, but eventually I hope it will cover basically everything (or a reasonable part thereof).