This $20 coin is 99.99% pure silver, with a diameter of 38 millimetres.

The Coin This $20 coin is 99.99% pure silver, with a diameter of 38 millimetres and a nominal metal weight of 31.39 grams. The reverse design by Canadian artist Maurice Gervais has been enhanced with colour to showcase the flowers and leaves of the dogbane plant, and features a Venetian glass dogbane by master glassmaker Giuliano Donaggio in Murano, Italy. The obverse features the effigy of Her Majesty Queen Elizabeth Il by Susanna Blunt.