The Assumption celebrated on 15th August is the belief that when Mother Mary died her body was assumed into heaven
This badge dated to the 15th century was found at the Eton Shrine. Shrine; Eton. Associated with Our Lady of Eton, it shows the central figure of the crowned Virgin, supported on either side by angels. She stands above the letter ‘e’ and a barrel, these being the seal for Eton. A similiar badge is located in the Musuem of London. A replica can be purchased here
Learn more about The Assumption of Mary on the wikipedia page