Ancient greek coins?? Ancient Coin Collecting II: Numismatic Art of the Greek World (No. II) Handbook of Ancient Greek and Roman Coins: An Official Whitman Guidebook
It depends on what you want to learn ancient Greek for. If you want to read Homeric Greek, I recommend Schoder, Horrigan and Edwards' Reading Course in Homeric Greek. For classical (Attic) Greek, I recommend Lawall and Balme's Athenaze: An Introduction to Ancient Greek. For Biblical Greek, I recommend Mounce's Basics of Biblical Greek.
