The 20p piece is a rare “mule” coin dating from 2008, and fetched £90 at auction. The coin was minted without a date due to an error and quickly became a sought-after collector’s items.
Lee Orr presented a grading seminar Dec. 8 at the Kenwood Park Center in Minneapolis, Minn., when the Northwest Coin Club held its December meeting. Orr is a longtime dealer at the club’s annual show ...
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