- Produced by The Royal Mint, in partnership with Warner Bros.
- Struck in .925 sterling silver and finished to a proof standard.
- Part of a series of coin releases celebrating magical moments from the Harry Potter stories, the reverse of the coin depicts an iconic scene from the book, 'Harry Potter and the Goblet of Fire', by J.K. Rowling.
- The reverse of the coin illustrates the courage and bravery of Harry Potter in the depths of the Black Lake, during the second task of the Triwizard Tournament at Hogwarts School of Witchcraft and Wizardry.
- The design on the reverse of the coin is enhanced using colour and features original artwork by Jim Kay, which was remastered by Bella Croft, a product and coin designer for The Royal Mint.
- The inscription, 'THE BLACK LAKE', is featured around the edge, above the design on the reverse of the coin.
- The obverse of the coin features the official, uncrowned portrait of King Charles III, created by Martin Jennings.
- The Latin inscription around the obverse of the coin, 'CHARLES III · D · G · REX · F · D · ', an abbreviation of 'CHARLES III DEI GRATIA REX FIDEI DEFENSOR', translates as 'Charles III, by the Grace of God, King, Defender of the Faith', followed by the monetary value of '50 PENCE', and the year '2024', in English.
- The initials 'MJ', of the artist Martin Jennings who created the official portrait of King Charles III, are displayed on the obverse of the coin, below the neck of the portrait.
- The coin is encapsulated within an acrylic block.
- Maximum mintage of 2,510.
