What continued up until 1971 that had involvement with Boulton?
The active use of his steam engine model
The active use of his silver plate and ormolu techniques
The striking of the large copper British penny
The manufacture of "cartwheel" pieces
Answer
The large copper British penny, also called the cartwheel penny, was a coin produced in the United Kingdom until 1860, with the last ones minted in 1864. It was the largest copper coin ever issued for general circulation in Britain, weighing over an ounce and measuring 30 millimeters in diameter. The coin's production and circulation were discontinued in 1860 due to its inconvenience and the introduction of smaller bronze coins.
Matthew Boulton True Fan Quiz: 31 Questions to separate the true fans from the rest
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