United Kingdom: Ultimate coin in popular “Innovation in Science” series dedicated to genius mathematician Alan Turing

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The Royal Mint released (4th July) new precious metal and cupro-nickel commemorative 50-pence coins which complete the popular six-coin series entitled “Innovation in Science,” focusing on the British men and women whose contribution to science was significant. The collector series included some of history’s greatest scientific minds including Charles Babbage, John Logie Baird, Rosalind Franklin, Stephen Hawking, as well as the single discovery of insulin. The last coin features the genius and achievements of Alan Turing (1912–1954), considered the “father of computing.” Turing is also widely credited with his pioneering research of theoretical computer science and artificial intelligence as we understand it today. However, it is Turing’s most sensational accomplishments, the recreation of the machine and process which deciphered the Third Reich’s Enigma code, that he is most remembered for.

The seven-sided coins are designed by veteran coin artists Matt Dent and Christian Davies. The reverse side features the British scientist’s name alongside a representation of the Bombe machine used to break the Enigma code during World War II. In a special nod to his work, the designers have incorporated hidden word sequences as part of the design, representing a Turing quote ONLY A TASTE OF WHAT IS TO COME and significant location, as well as the designers’ initials.

The obverse bears the fifth definitive effigy of HM Queen Elizabeth II designed by engraver Jody Clark and seen on all British circulation and commemorative coinage since 2015. The denomination 50 PENCE is part of the legend encircling the Queen’s likeness.

Denom.	Metal	Weight	Diameter	Quality	Maximum Mintage
50 pence	Cupro-nickel	8 g	27.3 mm	Brilliant Unc.	Unlimited
50 pence	.925 Silver	8 g	27.3 mm	Proof	3,210
50 pence	.925 Silver	16 g	27.3 mm	Proof	1,510
50 pence	.9167 Gold	15.5 g	27.3 mm	Proof	210

The Brilliant Uncirculated cupro-nickel version is housed in a blister-pak type folder with informative text and illustrations. Both versions of the sterling silver Proof coins are presented in a custom black vinyl case and the gold Proof coins are presented in a polished hardwood case; all are accompanied by a numbered certificate of authenticity. For additional information about the “Innovation in Science” series — Alan Turing commemorative range, please click here.

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