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1722 Halfpenny Incomplete Planchet
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<p>[QUOTE="l.cutler, post: 8185436, member: 13318"]The original patent called for the coins to be made of Bath metal which would contain a small amount of silver. Metallurgical test have shown no presence of silver though so Wood must have skimped to save money. The brass composition was very high in zinc, over 40% in most cases, this is why so many of the coins didn't hold up so well. The Hibernia coins also made by Wood were of a more standard composition and held up much better.[/QUOTE]</p><p><br /></p>
[QUOTE="l.cutler, post: 8185436, member: 13318"]The original patent called for the coins to be made of Bath metal which would contain a small amount of silver. Metallurgical test have shown no presence of silver though so Wood must have skimped to save money. The brass composition was very high in zinc, over 40% in most cases, this is why so many of the coins didn't hold up so well. The Hibernia coins also made by Wood were of a more standard composition and held up much better.[/QUOTE]
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1722 Halfpenny Incomplete Planchet
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