Quote: ZacUKhttps://en.numista.com/forum/topic6168.htmlI didn't know that...thanks. I like AA personally, it is so easy to spot! Especially on the 1997 50 pence (Isle of Man).
They go up to H - see above (Gibraltar, but same mint) link !
Not sure if it is used with A as well, to make AH - and also there can be differences on where the mintmarks are on the coin, even with AA - in that when AA is worn or broken they sometimes put another AA on, and sometimes in different areas, slightly. Obviously sometimes they do go to AB next.
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