Friends have rallied around the 'Puppet Man' after the well-known city busker's collection box was stolen.
The incident is said to have happened at around 2.30pm on Wednesday outside Lloyds bank in Gentleman's Walk.
Two young men are reported to have approached the street performer, whose real name is David Perry, to ask for directions to the castle.
While he was distracted taking one of the men around the corner, the other is said to have swiped his box full of change - which had around £30 in - as well as batteries for his heater.
Joe Sylvester, of Joe’s Pet Foods at Norwich Market, opposite the spot often used by the Puppet Man, said: “We feel like we have let him down.
“He has a really hard time of it and is quite vulnerable, but we consider him a great friend, and try to look out for him.
READ MORE: Vandalism worries for people living near shoe factory earmarked for 48 homes
“We told him not to worry and that we would give him the cash.”
Mr Perry, who is believed to be around 80 years old, lives in Great Yarmouth and can also be seen busking in the coastal town.
Another local trader, who asked not to be named, reported seeing two police officers talking to Mr Perry outside of Lloyds after the robbery.
READ MORE: Dog kills chickens at campsite
However, a Norfolk police spokesman said the incident had not been reported to them.
The trader said that Mr Perry headed home as he was feeling “quite disheartened" after the theft.
READ MORE: Bus fight leaves passengers 'shocked and shaken' during wait for police
The Puppet Man, as he has become known fondly through the years, was not in his usual spot in the city centre this lunchtime.
It is not the first time Mr Perry has had problems on the streets.
He was left with cuts and bruises to his face in 2010 after being attacked in Great Yarmouth, where a frustrated shop owner also poured water over his stereo in 2015 - before later apologising and replacing it.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here