A large number of gold coins and an iPad have been stolen from a house in Abington.
The thieves took about 50 gold sovereigns, some of which were in wooden boxes, and an iPad from the property in Ashburnham Road, Northampton.
The burgarly happened sometime between 10.30am on Friday, July 17 and 4.30pm on Sunday, July 26.
Witnesses, or anyone else who is offered similar items for sale in suspicious circumstances, can call Northamptonshire Police on 101.
Alternatively, they can call the independent charity Crimestoppers anonymously on 0800 555 111 or use the anonymous online form at www.crimestoppers-uk.org.