At 00:40 -0700 2004-06-09, Doug Ewell wrote:
More importantly, mint marks, like currency signs, are indivisible entities. They aren't just ordinary letters with a combining mark, the way � is just an N with a tilde over it. Take a look at the Web page James cited, with its screen shot of a numismatic database. You will see many mint mark images that cannot be created from any combination of existing Unicode characters.
But if some of them can?
This is not an open-ended collection of glyphs.
I find that hard to believe.
Coins, and ancient coins in particular, have been studied and categorized for centuries by experts, investors, and enthusiasts alike. There is widespread agreement as to which "glyph variations" represent the same abstract mint mark.
What are the authoritiative printed sources listing them exhaustively? -- Michael Everson * * Everson Typography * * http://www.evertype.com

