New Design 1 coin (Set of 50). Build money recognition with this set of 100 realistic plastic One Pound pieces in the new 2017 design. Approved by the HM treasury these coins are almost actual size and feature the updated tails artwork. Children’s equivalency skills will improve as they use these coins to work through hands-on money maths activities. Coins measure 2.5cm x 3mm Suitable for ages 3+