Autographs of Mark Harmon
Thomas Mark Harmon (born September 2, 1951) is an American actor, writer, producer, television director and former football player. He is best known for playing the lead role of Leroy Jethro Gibbs on NCIS.
He has appeared in a wide variety of television roles since the early 1970s, including as Dr. Robert Caldwell on St. Elsewhere, Detective Dicky Cobb on Reasonable Doubts, and Dr. Jack McNeil on Chicago Hope. He also starred in such films as Summer School, Prince of Bel Air, Stealing Home, Wyatt Earp, Fear and Loathing in Las Vegas, Crossfire Trail, Local Boys, Freaky Friday, and Chasing Liberty.
Harmon played Secret Service special agent Simon Donovan in a four-episode story arc in The West Wing in 2002, receiving an Emmy Award nomination for the role. Harmon's character of NCIS Special Agent Leroy Jethro Gibbs was introduced in a guest starring role in two episodes of JAG. From 2003 to 2021, Harmon starred in the spinoff NCIS as the same character.
More about Mark Harmon Wikipedia
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Traded items with a signature of Mark Harmon
The most expensive item with a signature of Mark Harmon (SIGNED Ghosts of Panama: A Strongman Out of Control Mark Harmon Leon Carroll Jr.) was sold in June 2025 for £202.47 while the cheapest item (Mark Harmon - NCIS Signed Autograph Photo FREE P&P) found a new owner for £0.01 in December 2012. The month with the most items sold (10) was May 2026 with an average selling price of £50.73 for an autographed item of Mark Harmon. Sold items reached their highest average selling price in June 2025 with £202.47 and the month that saw the lowest prices with £1.99 was December 2019. In average, an autographed item from Mark Harmon is worth £10.04.
Most recently, these items with a signature of Mark Harmon were sold on eBay - click here for more items.
