Police are investigating linked burglaries at two properties in Bath where 12 watches, including brands Rolex, Omega and Cartier, were taken.
Avon and Somerset Police has now issued CCTV footage showing a man officers want to identify.
The incidents, which police believe involved two offenders, happened on the evening of Tuesday, November 19, in the Widcombe area of the city.
A police statement said: “Items stolen from the properties, which were accessed through ground or first floor windows, included a gold coin with a loop at the top, as well as a diamond engagement ring and 12 watches, including the brands Rolex, Omega and Cartier.
“The man in the released footage (above) is in his late teens, or early to mid-twenties, and wearing hooded clothing.
“If you have information which could help us identify the man in the footage, or if you know where the stolen jewellery is, or have seen the items being offered for sale, please contact us.
Anybody who can help is asked to call 101 with the reference number 5224308799, or complete an online appeals form.