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A 2021 United Kingdom silver proof 50 pence coin issued by The Royal Mint as part of the Innovation in Science series, commemorating polymath Charles Babbage. The coin features a proof finish with frosted relief and mirrored fields. The reverse design comprises a stylized grid pattern reminiscent of mechanical computing machines, incorporating the name charles babbage and a sequence of digits. The obverse features the fifth definitive coinage portrait of HM Queen Elizabeth II by Jody Clark. The item is presented in its original black Royal Mint display case with a cardboard outer sleeve, accompanied by an information booklet titled Innovation in Science: The Mechanical Computer and a Certificate of Authenticity numbered 1186. The coin is protected within a clear acrylic capsule.
Diameter: 27.30 mm
Weight: 8.00 grams
Composition: .925 Silver.
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