What Is A Definitive Coin Design?ĭefinitive coin designs are the standard motifs seen on the majority of official currency. Read on for a full guide to definitive coinage, plus what we know so far about the new 2023 definitive coins. What will these designs look like? How can you get them? And why are they important for collectors of British coins anyway? This means that the standard reverse or 'tails' designs on UK coins will be updated for the first time in 15 years. The Royal Mint has just confirmed the imminent release of new 2023 definitive coin designs.