A piece of farriery and horse racing history has been placed on the auction block — a racing plate worn by Secretariat.

The shoe, which was worn by the 1973 Triple Crown winner while he was standing stud at Claiborne Farm in Paris, Ky., is mounted on a tooled solid walnut wood plaque emblazoned with his name on a brass nameplate. The opening bid for the shoe on Nov. 11 was $1,000 on Leland’s sports memorabilia auction website. The bidding was at $2,143 the morning of Wednesday, Dec. 9. Bidding will close Friday, Dec. 11.

Secretariat burst onto the racing scene in 1972, winning Horse of the Year. Yet, it was as a 3-year-old that Big Red set track records in the Kentucky Derby, Preakness Stakes and Belmont Stakes en route to capturing the 1973 Triple Crown. He earned $1,316,808 in 41 races over 2 years. Secretariat was inducted into the National Museum of Racing and Hall of Fame in 1974.

He sired 653 foals, including 57 stakes winners. He appears in the pedigree of several notable sires including Storm Cat, A.P. Indy, Gone West, Dehere and Chief’s Crown. Secretariat’s great-great-great grandson is American Pharoah, the first horse to win the Grand Slam of American horse racing after capturing the Kentucky Derby, Preakness Stakes, Belmont Stakes and Breeders’ Cup Classic during the 2015 racing season.

Secretariat was euthanized in 1989 at Claiborne Farm after a month-long bout with laminitis. He was 19.