well, i dunno, i think it's a great idea!
depending on your
budget and how much time you want to devote you can make yourself a coffee table book or a working reference. if the former, then "order" is not that important. you can just print out page after page and then bind the loose pages - or just three hole punch them into a
binder though this would be a rather cheesy looking alternative.
if you want to make a reference then layout becomes a bigger concern. biggest among these is choosing a format for describing the coins consistently throughout the period you're working with. this helps you, and anyone else who might benefit from using your
work, in finding the material easily once they learn your system. if you have or are expecting to produce a
work based on an extensive
collection you should also choose a method that "compresses" the data so that your book doesn't turn into a mammoth-sized book.
seeing from your prototype my guess is you're going more for the coffee book approach, certainly the less challenging route.
still, take it from me, the more you can think and plan aheadon a system that
scales well should you decide to make your initial aim more ambitious the better. once you commit to going down one road it's very tedious to have to reinvent the wheel because of some shortcoming you didn't think of earlier on ;-)
ras