The Siertsma was a car completed around 1979 by J. G. Siertsma of Den Helder, in the Netherlands, who had worked on it for a year and a half. The chassis was from a Triumph, probably a Herald, and both Triumph and Ford parts were used for the mechanical side, with the engine from a Ford. The original, carefully made two-seat body was wedge-shaped with straight lines, because the entire…
