“So the design was used on other items”.
Which indeed was used on the reverse of a recent item -
https://onlinecoin.club/Coins/Country/Saint_Helena/Gold_Quarter_Ounce_2024_Queen_Victoria_Seal/
Quote: The reverse … shows the Great Seal of the Realm of the United Kingdom as
used by Queen Victoria from 1838 until 1860. A youthful figure of Queen Victoria is depicted,
holding a sceptre, riding an elaborately caparisoned horse lead by a page on the left.
Around the rim, which has a crown on top, the Queen's legend in the traditional Latin:
VICTORIA · DEI · GRATIA · BRITANNIARUM · REGINA · FIDEI · DEFENSOR, which means
Victoria by the Grace of God, Queen of the British, Defender of the Faith.
Still looking for the medal …