Thieves who broke into a jewellers in Peterborough managed to steal rings, bracelets and bangles worth more than £26,000 in just three minutes, police said.
Officers have released CCTV of two men they want to trace in connection with the break-in.
It happened at a jewellers on Bridge Street at about 5am on Tuesday September 10.
Det Con Neil Hawkridge, of Cambridgeshire Police, said: "This was a well-planned and carried out burglary and we are keen to catch those responsible.
"The offenders got away with jewellery worth a huge amount of money. Such criminality affects us all because it drives up prices for other shoppers."