Introduced for 1956, the Mk X was almost unchanged from the Mk IX as Cooper were now dominating the category. Even the great Don Parker gave up his Kieft and switched to Cooper during '56. Jim Russell won the national Formula 3 championship in Britain, but internationally the Formula was in decline.
James Culver's Mk X at Anglesey in 2005
Formula 1 World Champion, Phil Hill tries out Richard Frank's Mk X at Monterey in 2006. Photo by Karol Andrews.
An interesting painting by Gordon Horner of David Boshier-Jones in a Cooper Mk X with JAP twin engine.
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Introduced for 1956, the Mk X was almost unchanged from the 
