For over twenty years, Hertfordshire Police used different versions of the Triumph twin cylinder motorcycle, initially 500cc and later 650cc, for patrol dutues. I have acquired several photos shown here: 1. 1946 rigid frame model, GNK 352. Rider wearing a cap and goggles. 2. 1950 machine, LRO 774, ridden by PC Ron Petts. (Photo from his family) 3. ...
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