1887 Gold Sovereign Proof 4-Coin Set
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This is the standard 50p design from 2008 to date. Britannia was replaced by a section of the Royal Arms showing elements of the third and fourth quarterings. When all the circulating coins (1p, 2p, 5p, 10p, 20p and 50p) are put together you can see the full shield (which is also displayed in full on the one pound coin).