A Banksy collector and authority on the elusive guerrilla artist says he has "no doubt" that at least some of the pieces that have sprung up across the coast are genuine works.
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John Brandler, owner of the 'hoola hoop girl' mural that appeared in Nottingham, said some of the pieces have all the hallmarks in terms of the artist's genius for where and how he places his pieces - but not all.
However he was less persuaded by the seagull, rat drinking a cocktail, and the signed piece at Merrivale Model Village.
The pieces have all sprung up across Great Yarmouth, Lowestoft, Oulton Broad and Gorleston in the last few days leading to speculation as to the hand behind them.
Mr Brandler said: "From what I have see there is no question they are not by Banksy."
"As with any artist be it Gainsborough or anyone, their handiwork is their signature not what they paint in the bottom corner.
"They scream at me that they are by Banksy."
He said his only concern was the number of murals appearing at the same time which could mean not all of them were authentic, with the latter three all being weaker in his opinion.
Although still capturing his style and humour, they lacked his "visual signature" he said.
However he added Banksy often "broke his own rules" in terms of how he operated.
He speculated that while the first four were certainly by Banksy the others could have been done by members of his team or another local artist looking to travel on his coat tails.
"If you do seven pieces of artwork surreptitiously someone is going to spot you - one you can get away with but seven is stacking the odds against you.
"Bearing in mind how paranoid he is about being caught in the act, seven is taking a risk."
"Banksy is an incredible artist and he has his own reasons for doing things which might not seem obvious to anyone until after the event," he said.
"The one with the boat is fantastic. I have seen these figures in other works and I think he has re-used previous stencils. He is a genius for placing his art in a specific place. If he had done this on the side of a petrol station in the middle of a town it would not have had the same power."
Banksy or not?
Bus shelter dancers
According to Mr Brandler this one is clever and visually stunning. Making use of a end of terrace wall and a bus shelter makes it impossible to buy which chimes with Banksy's ethos.
Child with sand
Again a convincing image, playing on the town's bucket and spade seaside roots.
Arcade grabber
Mr Brandler thought this the weakest of the "genuine" pieces.
All in the same boat
His favourite, tagging it "a stunner".
"Even I would drive up to see that one, it should be in a museum," he said.
Seagull eating chips
Given the option he would not buy this. It has Banksy's humour but lacks his "visual signature."
Rat with cocktail
The colouring and shading are "wrong"
"It is in his style but I would not buy it with confidence."
Merrivale
He said it "doesn't feel right." Adding: "There's no message with it."
He also took issue with the signature as Banksy works were mostly not signed.
Mr Brandler said he was not aware the Bristol-based artist had any connection with East Anglia, although he had claimed a work in Clacton around four years ago.
The Moments exhibition currently showing in Bury St Edmunds features some of his works, including 'hoola hoop girl' and it was possible he or his team has swung by, he added.
In the past Banksy has been known to claim artwork as his via Instagram, usually taking a few days.
Great Yarmouth Borough Council has confirmed it is not erasing the murals within its authority area.
A spokesman said: "We are viewing these as pieces of artwork, and therefore have a responsibility to protect them whilst we make further enquiries into their authenticity."
In 2014 it faced criticism for removing a stencil painting dubbed The White Lady in Gorleston.
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