Like many other mints, the Royal Mint issues bullion coins in precious metals, having much higher intrinsic value than their face value. The ten ounce (10 oz) silver coins are denominated as ten pounds (£10).
The coins are legal tender but are not intended for circulation. They are targeted at bullion investors or collectors who appreciate the special editions as pieces of art. The coins are typically "one-year" types usually issued in parallel with smaller denominations with the same reverse designs.
This coin is part of The Valiant range of bullion coins, featuring Etienne Millner's new take on the St George and dragon legend.
The Royal Mint says:
"A timeless adventure, a tale of honour, courage, and victory - this is the story of St George and the dragon. In 2019, The Royal Mint has reinvented this tale for modern times and the overseas investment market. Artist Etienne Millner's interpretation of England's patron saint features prominently on the one-ounce and ten-ounce Bullion Silver Valiant Coin. The action of the design seems to fill the coin, giving it an exciting sense of vibrancy."
The coins are struck to "bullion" standard (Brilliant Uncirculated) and distributed in plastic capsules or 25-coin tubes. | 
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