A 91-year-old man has had his Rolex watch snatched from his wrist while walking in Littlehampton on Friday (February 12).
Police said a woman approached the victim in Fitzalan Road, at around 2.30pm.
She made off towards East Street, leaving the man with a minor injury to his wrist.
Police describe the suspect as slim, 5' 5" and was wearing a colourful dress.
DI Kimberley May said:
"This was extremely distressing for the victim and we are appealing for any witnesses to come forward or if anyone is offered a Rolex watch for sale to contact us.
"We have increased our patrols in the area and if anyone has concerns please speak to one of our officers."
Anyone with information is urged to report online or ring 101, quoting serial 694 of 12/02.