This silver bowl was purchased by a relative who was in South Africa in 1952, the year of the 400th anniversary of the founding of Cape Town.
The coin is well known, a George VI silver 5 shilling. The bowl is more of a mystery.
The marks on the bowl that I see are (I believe) left to right:
The Lion's Head, Republique Sud-Africaine.
STG is sterling silver.
The third I cannot identify. I believe that it is a P. Could this be H. F. Gattichi of Prestige Jewellers in Pretoria? His mark is the letter P but I cannot find an example.
The fourth, SAM, is South Africa Mint.
Any help in interpreting this nice little silver commemorative bowl will be appreciated greatly.