This is part of the harness of Black Prince, the black charger which was given to him by the people of Australia, in congratulation for his wonderful defence of Mafeking.
The news of the raising of the Seige of Mafeking was greeted with wild enthusiasm throughout the Empire. Crowds assembled outside the house of B-Ps mother and they were not satisfied until she had appeared in answer to their cheers.
Later, when B-P returned home he was overwhelmed with receptions and presentations of all kinds. King Edward VII summoned him to Balmoral to confer on him the C.B. and to hear B-P's own account of the Siege.

Source "The Scout", Date unknown.

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