Burglars stole valuable and distinctive items of jewellery estimated to be worth several thousand pounds from an elderly couple in County Durham.
They included a rare men's Bulova Accutron watch and a woman's 18-carat gold bracelet, featuring a charm in the shape of a swastika.
The house in Osborne Road, Spennymoor, was broken into on 17 December.
Police want to trace a potential witness who approached the couple shortly after the incident.
He spoke to the occupants volunteering details about a car he had seen pulling away from the property.
The man, described as being smartly-dressed and wearing a navy anorak, described the vehicle as a metallic grey Ford with a partial registration of SK08. However, he declined to leave his details.
Other items stolen included two women's Breitling watches, a garnet ring with a flower cluster and a small amount of cash.
Police said the jewellery "would stand out a mile" if the burglar tried to sell it on and are appealing for people to be vigilant.