Three men threatened a member of staff with a hammer during an attempted robbery of a Seaford jewellers on Saturday (November 24).
At about 4.30pm, the three men went into Marks Jewellery and Antiques, High Street, but left after the man they threatened said he would call the police.
Detective Constable Sean Stapley, of East Sussex CID, said: “This was a frightening incident for the victim and we are appealing for anyone who saw three men acting suspiciously in the area to contact police.”
The first man is described as white, in his early 20s, approximately 5ft 7in to 5ft 8in and of slim build.
He was wearing a dark coloured jacket with the hood up and scarf around his face and wearing elasticated grey jogging bottoms. He was carrying a hammer.
The second man is described as slight taller than the first man, white, slim build an in his early 20s.
He was also wearing a dark coloured jacket with the hood up, a scarf which covered his face and grey or dark jogging bottoms.
The third man was wearing a black coloured jacket with the hood up and grey coloured jogging bottoms. It is believed that all three men were wearing gloves.
No one was injured in the incident.
Anyone with information is asked to contact Sussex Police on 101 quoting serial 1106 of 24/11 or the independent charity Crimestoppers anonymously on 0800 555 111.