Yes I remember Tikis well, in the Southern Rhodesia days they were indeed made of silver and each year my mom boiled them and put them in the Christmas pudding. In our part of the world there were two coins below that, the penny and the ha'penny, and a shilling was a huge amount at twelve pennies.
I thought you might remember them
my Grandma put them in Xmas puds too.
We lived just outside Wankie then