Depicts King Charles III’s effigy, surrounded by the Latin inscription. Engraver's initials on the neck.

The 2023 coins issued in the Brilliant Uncirculated & Proof sets featured a special Tudor crown privy mark.

CHARLES III DEI GRATIA REX FIDEI DEFENSOR means King Charles III, by the Grace of God King, Defender of the Faith.

Engraver: Martin Jennings (MJ)

Depicts a hazel dormouse on the right, the denomination and an interlocked C, reminiscent of King Charles II's royal cypher, on the left side.

The hazel dormouse is the sole native dormouse in the British Isles, while the edible dormouse has been introduced in South East England. In 2010, hazel dormice were discovered in County Kildare, Ireland, and are spreading due to hedgerow prevalence. A 2020 study reported a 51% decline in UK hazel dormouse populations since 2000, with habitat loss and climate change posing significant threats. The hazel dormouse is protected under the Wildlife and Countryside Act in the UK.

The design is a collaboration between Royal Mint artisans, engravers, and overseen by Gordon Summers, the Royal Mint’s chief engraver, involved support from the Royal Horticultural Society (RHS) and the Royal Society for the Protection of Birds (RSPB).