Thanks, Frank. I guess that 38 pounds was a fair bit of money back then. Even the precisely stated three shillings and seven pennies would have had some significance.
I am still interested to know where the rank of Head Constable fitted into the police hierarchy. There seems to be nothing like it around today.
There once was a National Police museum in Pretoria and very good it was. Sadly it has gone the way of most government run institutions and subsided into a state of decrepitude and closure. Coincidentally an old Police collector came in this morning and remembered that when he first joined the SAP he worked with a native Head Constable. He said that the rank was equivalent to a low level Warrant Officer.