If you must buy ancients from ebay, then at least stay away from any seller found on the Notorious Fake Seller List, maintained over on the FORVM forum. While anyone who sells ancient coins might sometimes sell a fake coin by accident, the NFSL contains only sellers who deliberately, repeatedly, maliciously and unrepentantly sell fakes.
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