Police are hunting for three men who attacked a 39-year-old man with a bottle until he was beaten unconscious.
The robbers stole the victim's money and cigarettes as he was walking along Holden Street in Radford, Nottingham.
One of the three men asked him for a cigarette and when he reached to offer the packet over he was surrounded.
The robbers stole £60 in cash and his cigarettes before attacking him repeatedly with a bottle on 5 February, Nottinghamshire Police said.
He was taken to the hospital for treatment where glass was removed from his cheek.
All three robbers are aged between 20 and 25 years old.
One of the men was 5ft 10in with a skinny to medium build and short, spiky hair. He wore a dark denim jacket and dark trousers.
A second man had black hair down to his chin and bucked or chipped front teeth.