2017 AD., United Kingdom, Elizabeth II, Benjamin Bunny circulating commemorative, Royal Mint, 50 Pence.

United Kingdom, Elizabeth II, engravers Jody Clark (obv.) and Emma Noble (rev.), The Tales of Beatrix Potter 2nd series, Benjamin Bunny circulating commemorative, Royal Mint, Transatlantic, Wales, 2017 AD.,
50 Pence (ø 27,3 mm / 8,03 g), copper-nickel, 8,00 g. theor. mint weight, mintage 11.300.000 , axis medal alignment ↑↑ (0°), plain edge, an equilaterally curved heptagon (7-sided shape),
Obv.: ELIZABETH II · D · G · REG · F · D · 50 PENCE · 2017 · / J.C , diademed head of Elizabeth facing r., 5th portrait (wearing the George IV State Diadem), engraver´s initials below truncation.
Rev.: BENJAMIN - BUNNY , depiction of Benjamin Bunny facing.
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Year / Mintage
2017 11,300,000
2017 ? BU

Helen Beatrix Potter (28 July 1866 – 22 December 1943) was an English writer, illustrator, natural scientist, and conservationist best known for her children's books featuring animals.
The Tale of Benjamin Bunny is a children's book written and illustrated by Beatrix Potter, and first published by Frederick Warne & Co. in September 1904. The book is a sequel to The Tale of Peter Rabbit (1902). Benjamin Bunny was an instant commercial and popular success, and thousands of copies were in print by the end of 1904.

More on https://en.wikipedia.org/wiki/Beatrix_Potter , https://en.wikipedia.org/wiki/The_Tale_of_Benjamin_Bunny