Thieves escaped with a large amount of jewellery after breaking into a house in Corby.
The property in Cottingham Road was broken into sometime between midnight and midday on Monday, May 25.
A rear ground floor window had been smashed to get into the house.
A police spokesman said: “Among items of jewellery which were stolen was a gold watch with an inscription marking 25 years service with British Steel and a pocket watch with a picture of a trout on the face.
“Other items included six ladies’ watches, three more men’s watches, a silver St Christopher chain and a number of rings, earrings and chains.”
Witnesses, or anyone who knows anything about this incident, can call Northamptonshire Police on 101.
Alternatively, they can call the independent charity Crimestoppers anonymously on 0800 555111 or use the anonymous online form at www.crimestoppers-uk.org.