Without doubt the great boer war of 1899 - 1902 has been the greatest factor behind the global interest in the coins and bank notes of the Zuid Afrikaansche Republiek. So many colonial sons from Great Britain, Australia and even Canada fought for Queen Victoria and the "Land of Hope and Glory" (see below). The new oppressors, the British, were no worse than the Boers who in turn had earlier displaced the weaker multiracial Griqua peoples in the region now known as the Orange Free State and, before them, the nomadic hunting bushmen had been ruthlessly erradicated in turn by the Griquas. All this happened within the period of just one hundred years.

Image right: the flag of the Zuid Afrikaansche Republiek, the "Vierkleur" (four colour) used during the Boer War. The flag, first raised in 1884, was based on the colours of Imperial Germany. (More at this link) 

All South Africa's classic numismatic rarities were minted or printed during or before the boer war - consider the Veld Pond, Burgers Pond, Strachan and Co tokens, the Griqua Een Pond bank note and Kruger coinage. All these pieces are now classic chariots - great investments - as demand grows.