A woman was robbed on Heath Lane, Skircoat Green, on Saturday, November 30.
The incident happened at around 5.45pm when the woman, who was on her own, was pushed to the floor. A man then grabbed her handbag and pulled it from her grasp. He then made off up Heath Lane and then onto Heath Road with the bag and contents.
The victim was helped by a woman walking a dog who may have witnessed the incident. There was also a couple present who were pushing a pram and told the victim they saw the man enter a car and then drive off.
Officers are keen to speak to any of these witnesses or anyone else who witnessed the incident.
Contact DC Craig Aubrey of Calderdale CID on 101.