JFK's leather jacket revealed on Antiques Roadshow

A leather jacket that once belonged to John F Kennedy has been valued at a six-figure sum.

The jacket features on next Sunday's Antiques Roadshow, filmed at Walmer Castle in Deal. It's brought along by Canon Carl Arvidsson, the chaplain of a Kent boarding school.

His father had been given the jacket by a Swedish friend who had family connections with Swedish aristocrat Gunilla von Post - Kennedy's lover before he married Jacqueline Bouvier.

A collection of love letters between the two sold at auction in 2010 for $115,000.

"Gunilla was 21 to 22 and lived in the south of France and then in Paris, and she was JFK's lover before he got married to Jacqueline Bouvier. I believe the relationship ended in 1955 or 1956. She kept the jacket - it's size 44, which was his size," Canon Arvidsson tells the programme.

"Some of her belongings and love letters from JFK were sold recently in America and some of his goods were left in the apartment. She had three children and a nephew. The nephew was given some of the items and his best friend is my father."

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In 2013, Kennedy's Air Force One bomber jacket sold for $570,000 - way over its estimate of $20,000 to $40,000.

And other high-priced celebrity jackets have included the leather jacket owned and worn by George Harrison in the early years of the Beatles, which sold for £110,450 in 2010, and Michael Jackson's Thriller jacket, which sold for £1.1 million in 2011.

Giving his valuation of Canon Arvidsson's jacket, expert Jon Baddeley describes it as an 'iconic piece'.

"Valuing unique items such as this flying jacket is not an exact science, as there has been nothing directly comparable sold previously," he says.

"However, judging by the fabulous prices paid at the auction from the estate of Jackie Onassis and subsequent items relating to the Kennedys, the market for Kennedy memorabilia continues to grow."

Canon Arvidsson isn't planning to sell any time soon, saying he may have DNA analysis carried out on the jacket, to strengthen its provenance and, possibly, its value.

The exact valuation will be revealed on the programme, due to be broadcast on BBC One at 8pm on Sunday November 22.