17th Century Copy of "Elements" I found an actual 16th century (or so the seller claims, but it matches up with what I've read about, i.e., only 6 books translated, plus 11-12. etc.) copy of a translation of Euclid's "Elements". I'm very tempted to buy it, but I wanna know if it's rare. This is as a collection item only, as I realise that mathematically it really makes no difference whether I have this copy of Dover's recent edition (which I do). *EDIT* Typo, 16th century.