Like many other mints, the Royal Mint issues bullion coins in precious metals, having much higher intrinsic value than their face value. The one ounce (1 oz) gold coins are denominated as One Hundred Pounds (£100).
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.
The 2021 Year of the Ox bullion coins are part of the Royal Mint's Shēngxiào Collection - a coin series dedicated to the Chinese Lunar calendar.
As the mint says:
"For centuries The Royal Mint has drawn upon its unrivalled heritage, experience, and craftsmanship to evolve and meet the needs of an ever-changing market. In 2014 we struck the United Kingdom’s first Chinese Lunar coins, introducing a new series and a United Kingdom first. The Shēngxiào Collection, named to honour the Chinese zodiac, is a celebration of the UK’s diverse multi-cultural society. At Chinese New Year, gifts and tokens are exchanged, particularly the gift of money in red envelopes, symbolising good wishes for the recipient’s health, wealth and prosperity. These Lunar coins from The Royal Mint embrace this globally observed tradition, lending a unique British angle to an ancient tradition."
"People who are born in the Year of the Ox are known for possessing traits such as diligence, dependability, strength and determination. They have a truthful nature and view family and work as very important. Possessing great patience and a strong desire to advance in life, oxen work hard to achieve their goals. They are not easily influenced by others and try to do things in their own way. They almost always have a detailed plan and enjoy great success as a result."
The one ounce gold proof coins were released in early September 2020, in advance of the Chinese Year of the Ox (11 February 2021 to 31 January 2022); in mahogany presentation box, Royal Mint Product Code: UKO21GP, issue price £2,320.00, presentation issue limit 888, maximum coin mintage 898. | 
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