Rosalind Franklin 50p



Issued 2020
Diameter 27.30mm
Weight 8g
Composition 75% copper, 25% nickel (referred to as cupro-nickel)
Obverse Jody Clark
Reverse Dave Knapton
Edge Plain
Inscription ROSALIND FRANKLIN DNA photograph 51
Mintage 0 The coin may enter circulation if there is demand.
B.U pack C
10.00 L
20/07/20 I
No sales data K

Design details:.....The unsung hero of D.N.A the second coin in the innovation of science series.


Rosalind Elsie Franklin (25 July 1920 16 April 1958) was an English chemist and X-ray crystallographer whose work was central to the understanding of the molecular structures of DNA (deoxyribonucleic acid), RNA (ribonucleic acid), viruses, coal, and graphite. Although her works on coal and viruses were appreciated in her lifetime, her contributions to the discovery of the structure of DNA were largely recognised posthumously. Rosalind died in 1958 at the age of 37 of ovarian cancer. Photo 51 is an X-ray diffraction image of a paracristalline gel composed of DNA fibre taken by Raymond Gosling a graduate student working under the supervision of Rosalind Franklin in May 1952 at King's College London. While working in Sir John Randall's group the image was tagged "photo 51" because it was the 51st diffraction photograph that Franklin and Gosling had taken. It was critical evidence in identifying the structure of DNA.