A schoolboy on a train was handed a 'Banksy' by a passenger claiming to be the elusive graffiti artist.

Ben Azarya was handed the signed copy of an iconic print which he was told would be worth about £20,000 after he helped a stranger pick up his paints after the fell out of his bag.

The man, on a train in Oxenholme, Cumbria, introduced himself as Robin Banks, a name that has been linked to Banksy.

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Ben Azarya (pictured with the print) 14, was given the print with a distinctive autograph by a man who introduced himself as Robin Banks- a name linked to Banksy

He signed a print of a flower thrower, with a distinctive autograph and gave it to the helpful 14-year-old telling him to 'have a good life'.

Ben had no idea who Banksy was until he got home and looked him up on the internet.

He said: 'He was on the phone for most of the time talking to someone called AK47.

'He opened his rucksack and had a gas mask and spray paints inside. He got out a piece of paper and had colours marked on it of what he had been trying out and he dropped his colours.

'Banksy' signed the print of a flower thrower with a distinctive autograph (pictured) and gave it to the helpful schoolboy telling him to 'have a good life'

It was only after Ben went home and researched Banksy, that he began to realise the significance of his encounter

'I picked them up for him and after that he started signing it in weird letters and numbers. He said 'do you know who Robin Banks is?'.

'I said no and he said 'this will be worth about £20,000 - have a good life, brother'.'

Sadly though, it looks like the schoolboy will be disappointed as the real artist has come forward to say it wasn't him.

A spokeswoman for the elusive graffiti artist said: 'It has got nothing to do with him. He doesn't know anything about it.'

Ben didn't realise the significance of his encounter until he started researching Banksy.

The artist's worldwide fame has seen prices for his work skyrocket, with his art fetching more than £1m at auction.

Intense speculation surrounds his identity.

Ben described him as: 'White, in his late 40s. He was wearing scruffy clothes and he had a black, fluffy hat which looked really old.

Bannksy's work grew out of the Bristol underground scene, which involved collaborations between artists and musicians, and often provide a social or political commentary, pictured is Banksy's 'Roller Chimp'

The artist's worldwide fame has seen prices for his work skyrocket, with his art fetching more than £1m at auction, pictured is seventeen works by Banksy including an image of model Kate Moss to sell at Bonhams

Banksy is also a film director and even appeared, although heavily pixelated, in his first film Exit Through the Gift Shop- billed as 'the world's first street art disaster movie' (pictured)

'He had a little jacket that didn't go over his arms and jeans with paint on. He looked really wacky and had blonde hair and blue eyes.'

Ben and his mum Jan have been in touch with Bonhams Auction House, which advised them to get the print authenticated.

If the trademark print proves to be a genuine Banksy, Ben says he has no qualms about selling his work of art.

'I will probably spend about £1,000 and get a new phone and save the rest,' he said.