On Monday's 'Pawn Stars' (Mondays, 10PM on History), a customer brought the Gold & Silver Pawn Shop what he said was a horseshoe worn by Secretariat. If it were a genuine item, it would be a real catch for the guys at the shop, but it needed to be authenticated. So Corey Harrison and the Old Man brought in their expert to check it out.
The customer had a letter signed by Penny Chenery, Secretariat's owner, and the expert said he could establish that the letter had been sent from Chenery's daughter's house in New York. The shoe also had marks consistent with the brand of horseshoe that Secretariat had worn. The big test, according to the expert, was whether it was a race shoe or a farm shoe: race shoes are aluminum and farm shoes are steel.