50 Pence - Elizabeth II (Alan Turing; Silver Piedfort) 2022 front 50 Pence - Elizabeth II (Alan Turing; Silver Piedfort) 2022 back
50 Pence - Elizabeth II (Alan Turing; Silver Piedfort) 2022 photo
© The Royal Mint, 2022

50 Pence - Elizabeth II Alan Turing; Silver Piedfort

2022 year
Silver (.925) 16 g 27.3 mm
Description
Issuer
United Kingdom (United Kingdom, British Overseas Territories and Crown Dependencies)
Queen
Elizabeth II (1952-2022)
Type
Non-circulating coin
Year
2022
Value
50 Pence 0.50 GBP = USD 0.66
Currency
Pound sterling (decimalized, 1971-date)
Composition
Silver (.925)
Weight
16 g
Diameter
27.3 mm
Shape
Equilateral curve heptagon (7-sided)
Technique
Milled
Orientation
Medal alignment ↑↑
Updated
2024-10-09
References
Numista
N#332429
Rarity index
94%

Reverse

An image depicting a cogwheel accompanied by inscription set against background of letters.

Script: Latin

Lettering: ALAN TURING

Engravers: Matthew Dent, Christian Davies

Edge

Plain

Comment

The seventh release in the Innovation in Science series, the coin was issued individually. It was also struck in silver proof, silver piedfort and gold proof.

© The Royal Mint, 2022

The coin includes several hidden codes as seen below:
Code 1: The 3 words ‘GEARS GRIN THAN’ when entered into What 3 Words (https://what3words.com/gears.grin.than) take you to Cambridge University, where Alan Turing Studied Mathematics.
Code 2: ONLY A FORETASTE OF WHAT’S TO COME - This quote came from his reflections of his code-breaking machine, Bombe.
Code 3: CD AND MD, the designers initials.

© Changechecker

Interesting fact

One interesting fact about this coin is that it features a unique design on its reverse side, which depicts a representation of Alan Turing's famous "Turing Machine" - a theoretical model for computation that he proposed in the 1930s. This design was chosen to commemorate Turing's contributions to computer science and artificial intelligence, and it makes the coin stand out from other coins in the series.