If you're doing a search on
ebay or
Amazon, the full title is "Greek Coins and Their Values" by David R. Sear. There are two books in the Greek series: Volume 1 (Europe) and Volume 2 (Asia and Africa).
Mr. Sear writes the "entry-level" reference catalogues for Roman, too. The Millennium Edition Roman catalogue is being progressively released, since the year 2000. It's up to three volumes and counting, with over 500 pages per volume:
Volume 1: Early Rome, the Republic and the First Twelve Caesars (280BC to 96 AD)
Volume 2: The Golden Age of the Empire (96 - 235 AD)
Volume 3: The Military Emperors and the Beginning of the End of the Empire (235-285 AD)
Volume 4: not yet released, but presumably the period 285 AD to the Roman/Byzantine transition in 498 AD.
Each Sear volume costs me around AU$200 or so, as they come from Britain and the pound-to-dollar conversion is atrocious - plus the cost of shipping hardcover, glossy-paper books to the far side of the planet. The European Greek book is slightly smaller, and cheaper.
For the generalist in ancients, add extra volumes if you're into Byzantine or Greek Imperial (Roman Provincial) coins.
They are all excellent resources, but I have no idea how a beginner is supposed to get interested in ancients around here when the "Full Catalogue" of Greek coins costs $300 and the Roman costs AU$800!

Of course, the older "all-in-one" volumes for Roman are probably still available, second-hand if nothing else, and still well worth acquiring for the beginner. I bought my second edition Sear (1981) some years ago for AU$25. Granted, someone had been at it with scissors, cutting out the pretty pictures first!


Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis