THREE bespoke dust caps were stolen from a vehicle in Meadow Road, Droitwich, by three men and a woman wearing hoodies and tracksuit bottoms.
It happened at 5.49pm on Monday.
The caps were blue aluminium and in the shape of hand grenades, complete with pins.
Dust caps were also stolen from another vehicle in the same area last week.
Witnesses or anyone with any information should call police on 101 or Crimestoppers on 0800 555 111.