Map of Magna Graecia
The map below is of the Greek and Carthaginian city states of the Magna Grecia area. Italy was first settled by the Greeks and Phonecians around the 8th century BCE. The cities listed minted coins in precious metals except for those in Northern Italy who mainly minted in bronze.
Sources: David Sear (2000). Greek Coins and Their Values: Volume 1 - Europe. Seaby publications.
Magna Grecia coins online at http://www.bio.vu.nl/home/vwielink/WWW_MGC/homeFrameless.htm
Klawans (1995). Ancient Greek & Roman Coins. Golden Books Publishing.
Coin images are from my collection and from Classical Numismatic Group.