Obverse: the obverse of the coin features an image of Queen Elizabeth II surrounded by the text "ELIZABETH II • D • G • REG • F • D • 10 POUNDS". Letters "DG REG FD" represent the Latin abbreviation for "Dei Gratia Regina Fidei Defensor", which means "Grace of God, Queen, Defender of the Faith". Beneath the Queen's image are the initials "JC" by coin's designer Jody Clark.
Reverse: the reverse of the coin features a stylized white Mortimer lion holding a shield, with the designer's initials "JC" on the coin's bottom right. The image of the lion is surrounded by the text "WHITE LION OF MORTIMER • 10 oz • FINE SILVER • 999.9 • 2021" which marks the coin's name, weight, silver fineness, and year of issue.
About the coin: the popular collection of Queen's Beasts continues. It was complemented by a new silver coin depicting Mortimer's white lion. This is the second lion in the collection. The image of this roaring, slightly curved lion's tail signifies loyalty and discipline. These are qualities that have always been important to monarchs.