Bidspirit auction | TDC 2021 Alan Turing 50p,

TDC 2021 Alan Turing 50p, Silver-Layered - Issuer: Tristan da Cunha. Date: 2021. Denomination: Fifty Pence. Obverse Designer: Joel Iskowitz. Design Type: Elizabeth II / Alan Turing Typographic. Key Identifiers: Limited edition release of 49,995. This uncirculated 50p coin was issued under official licence by The Bradford Exchange. Accompanied by a certificate of authenticity and a printed British Service Identity Card. Physical specifications: Diameter: 28.5 mm Weight: 14 g Metal: Base metal layered in pure silver.