.826 ozt 1977 Elizabeth II Silver Jubilee 925

The image shows a 1977 Queen Elizabeth II Silver Jubilee Crown coin. 
This coin was minted by the UK Royal Mint to commemorate the 25th anniversary of Queen Elizabeth II's accession to the throne in 1952. 

The obverse features an equestrian portrait of Queen Elizabeth II in uniform as Colonel-in-Chief of the Grenadier Guards, a uniform worn during the Trooping the Colour ceremony. 

Symbolic Design: The reverse side features coronation regalia, including the Royal Crown, the Ampulla (a vessel for anointing oil), and the Anointing Spoon, all surrounded by a floral design.  

Designer: Both the obverse (featuring an equestrian portrait of the Queen) and reverse designs were created by Arnold Machin. 

Although initially having a face value of twenty-five new pence, these crowns were revalued to £5 in 1990. 

Content: .82675 troy oz. of .925 fine silver

Mint: Royal Mint

Denomination: 25 new pence

Diameter: 38.5 mm

Thickness: 2.4 mm

Weight: 27.8 g or 25.715 g fine silver

Purity: 92.5%

Coin comes in plastic capsule inside clamshell case from the mint.