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 for '56.

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.