Thames Valley Police is appealing for witnesses to an attempted robbery in Princes Risborough.
Between 10.30 and 10.40am on Thursday 30 September, the victim, a woman aged in her eighties, arrived at the Horns Lane car park in Princes Risborough with a friend.
They were both approached by a woman with a clipboard, who claimed to be collecting for a local deaf charity.
The offender handed the clipboard to the victim’s friend, and while they were both distracted, the offender pushed the victim into the vehicle she had arrived in and tried to steal a gold bracelet from the victim’s hand.
The force used resulted in a substantial bruise to the victim’s hand, but she did not require hospital treatment.
The offender is describe as a white woman, aged in her twenties of average build and around 5ft 6ins tall.
She had either blonde or light brown hair and was wearing a hi-visibility vest.
Investigating officer Detective Constable Patrick Cline of the Priority Crime Team based at High Wycombe police station, said:
“This was a frightening ordeal for the victim, who thankfully, although shaken, did not suffer serious injuries.
“I am appealing to anybody that was in the area at around the time of the incident to contact Thames Valley Police if you have witnessed anything that can assist the investigation.
“You can make a report online or call 101, quoting reference number 43210442337.
“Alternatively, for 100% anonymity, you can also call the independent charity Crimestoppers on 0800 555 111.”