Hi RC, great topic.
South Africa made many silent films from 1910 to 1925 and unfortunately, many of these are lost with only stills and pieces of films remaining. Some of the missing titles are:
The Great Kimberley Diamond Robbery (1910)
The Bridge (1918)
The Voice Of The Waters (1918)
The Man Who Was Afraid (1920)
The Swallow (1921)
The Vulture's Prey (1921)
The Blue Lagoon (1923)
Ones that are thankfully still with us are the epic
De Voortrekkers (The Pathfinders, 1916),
King Solomon's Mines (1918) and the war drama
The Symbol of Sacrifice (1918)