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| Country | UK |
| Year | 1797–1901 |
| Denomination | 1d |
| Weight | 28.300g |
| Diameter | 36.0mm |
| Grade scale | UK grading (EF/UNC) |
UK · 1797
Matthew Boulton's famous Soho Mint coin — 1 ounce copper; "cartwheel" rim. First machine-struck British penny.