The Henry VI Silver Groat Annulet Issue from the Calais Mint, dating from 1422 to 1439, is a rare and valuable piece of British medieval coinage. With a fineness of 0.925 silver, this hammered coin showcases the craftsmanship and artistry of the late medieval period. This coin is not only a collectible item but also a piece of history that holds significance in understanding the economic and political landscape of Britain during the 15th century.