Price Guides Of World Coins

http://www.ngccoin.com/poplookup/Wo...e-Guide.aspx But I rather check auction( ebay)archives.

Great Britain has several publishers of similar books. The most widespread one is Spink, which covers the entire English/British series from pre-Roman times to moderns. For modern stuff only, the Rotographic books are probably better. The Coincraft catalogues were more comprehensive for the period 1066-today, but they've apparently been out of print since last millennium.

Pretty much every country that has a large number of collectors will have a "native" coin catalogue, usually in the local language. Thus, German catalogues such as Schon are in German, French catalogues in French, Chinese catalogues in Chinese and so forth. Euro catalogues can be found in most Eurozone languages. In Canada, they've got the Charleton catalogue, which I think only comes in an English version. I have seen Singapore/Malaysia/Malay States catalogues around, but only older editions.

For an entire-world coin catalogue, the Krause catalogues (which also form the basis of the NGC database valdiman linked to) pretty much have the monopoly these days.