On April 2nd Bob Tye will be giving a talk on "The Origin of the Sterling Weight Standard". No doubt he will have some copies of his latest book available and will be willing to sign copies. This single volume introduction to early world coins includes a catalogue of over 1,200 common or influential ancient and medieval coin types, from Europe, Persia, India and China. It is especially useful as a basic catalogue of the commoner Indian and Chinese issues.It also includes an introduction to ancient and medieval denomination sets and an overview of pre-modern systems of weight, and their influence on coin weight. Sample pages are available at his website here.