An Antiques Roadshow guest was shocked when she discovered the value of her father's police hat once worn by John Lennon.
The woman brought the special item to the BBC show in yesterday's episode (January 3) and explained that her late father, Ivor Gordon Russell, had escorted The Beatles in the Birmingham Hippodrome.
She told expert Marc Allum that a sergeant came up with an idea of dressing the band members as police officers to help escort them into the venue through the crowd, with the subsequent pictures becoming world-famous.
In a clip from the show, the guest explains: "John Lennon wore my father's helmet and the paparazzi were out and took pictures, and they got them into the theatre without any problems."
She brings the picture to the expert which shows her father standing behind the group while the four members of The Beatles wear the navy felt police hats and salute their fans.
"The Beatles were so easy-going, and at that time, were such fun because my father told us that they were great company," the officer's daughter adds.
"The inspector who was in charge of them invited them back at his house for tea."
Marc delivers his opinion on the memorabilia and says: "So this is an object with a great deal of provenance. This is the actual helmet in that photograph on John Lennon's head.
"I can't help thinking that the helmet has a bit of John Lennon's DNA on it, and that's what kind of makes it so special, in a way."
He explains that collecting The Beatles memorabilia is still considered a hot area, before saying the police hat is likely to fetch around £5,000 and £8,000 in pop and rock auctions.
The guest gasps and says: "Wow, lovely."