Eimer 274.
34mm. Silver. By J.Roettier.
Obverse with draped bust of Mary, reverse showing the Queen seated upon a mound. The official coronation issue.
Slabbed and graded by NGC as MS61.
The certification number for this medal is 6134102-001.
Rare in such a high grade of preservation, especially considering this issue has a reported mintage of just 400 medals.