Gilt button 24mm diameter. Within a roped border an Imperial crown over a fouled anchor lying on its side.
This example with the backmark Firmin London.
South African Harbours Uniform Button
The British & Commonwealth Military Insignia Database
Military Badges and Buttons of the British Empire and Commonwealth
Hi id like to know more about this button are they still used today? I found one while walking on the beach. Find it very interesting thank you.