Values up to €2 are circulation pieces that can be spent anywhere in Euroland, while the denominations above can at best be spent in the issuing country only (many are sold above face value only).
Right, and forum members who are not sure about such differentiations should have a look at the descriptions of the euro forums
http://www.worldofcoins.eu/forum/index.php/board,76.0.html Some euro countries have issued €0.25 or €1.50 coins which are regional pieces too. Rule of thumb: Anything that does not have the usual "common side" is a collector coin.
As for the term "collector coin", well, in a euro forum it makes sense as those terms are clearly defined. Of course a collector may well prefer other pieces, but it simply means that such pieces are primarily made for and aimed at collectors. Of these three coins here, the €3 can at least be had at face.
And the future of books in the sense of something printed on paper - who knows. They will certainly not die out in the next couple of years, but a choice of formats will certainly become common. In any case, the Unesco program is mostly about books (regardless of the format, I suppose) and reading in general, so I hope there will be many more World Book Capitals and Days in the future ...
Christian
