The ancient slang names for the coins of Athens were "owls" and "girls" (but in Greek of course). "Owls" were so popular as a central currency of the ancient world that the "old style" design remained essentially unchanged and somewhat archaic long after other cities began to produce coins of with more refined artistry. The Athens types were so popular, numerous imitatives were struck in the Levant, Egypt and elsewhere (we include those on this page too). Under Roman rule, as a semi-autonomous city, Athens struck "new style" (Hellenic style) tetradrachms. "Owls" are still very popular - for ancient Greek coin collectors, they are perhaps the most popular ancient coin type.