The horse clicker, Los Angeles 1932
Bertil Sandstrom made his return to the Olympic dressage arena in 1932 and was aiming to add to his haul of medals.
The Swede had won silver in the men's individual dressage competition at both the 1920 Games in Antwerp and the Paris Games of 1924.
In Los Angeles eight years later, Sandstrom looked to have repeated the feat after finishing the equestrian competition in second behind Frenchman Xavier Lesage.
But he was later disqualified and demoted to last place for clicking at his horse to encourage it. Sandstrom appealed the decision to the Jury of Appeal, saying the noise was his saddle creaking, but he was unsuccessful in his protest.
Despite being demoted to 10th spot, Sandstrom still left with a third silver medal of his career from the team event.