10 Pence - Elizabeth II 4th portrait, Royal Shield, non-magnetic

The Royal Shield reverse was part of a coordinated redesign across six denominations in 2008, with the individual shield segments collectively forming the complete Royal Arms when the coins are assembled — a concept by designer Matthew Dent that the Mint promoted heavily at launch. The non-magnetic copper-nickel composition was retained for only a brief window before steel blanks became standard practice, making this transitional phase relatively short-lived in production terms.