The incident happened at around 10.10pm on Sunday 20 September when a man entered Cost Cutter Stores in Common Road. He assaulted a staff member with a bladed instrument before he made off with a quantity of cash from the till.
The victim, a 21-year-old man from Wolverhampton, suffered cuts to his head and face and was taken to Russell Hall Hospital for treatment. His injuries are not life threatening.
If you have any information on the incident please contact DC Marc Bailey at Staffordshire Police on 101 quoting incident number 816 of September 20. Alternatively, you can contact the independent crime-fighting charity Crimestoppers anonymously on 0800 555 111 or through their Anonymous Online Form at www.crimestoppers-uk.org.
No personal details are taken, information cannot be traced or recorded and you will not go to court.
UPDATE 2/10/15: Detectives investigating this incident have arrested a 37-year-old man from Tipton. He remains in custody for questioning on suspicion of robbery. Thank you for all the shares of this appeal.