Masked men wielding a knife and a baseball bat stole cash during a terrifying raid at Goldthorpe.
Officers in Barnsley are appealing for witnesses following the armed robbery at the Credit Union on Barnsley Road.
Two masked men entered the store brandishing a baseball bat and a bladed weapon at 10.40am on Tuesday.
One customer was in the store at the time of the incident and a quantity of cash was stolen.
It is thought that the offenders left in small van, similar to a Ford Escort. The van is described as white, with an amber light on top. It is believed the windscreen was cracked. Officers believe that this vehicle had been parked on Gosling Gate Road.
No one was injured during the incident.
If anyone witnessed the robbery or has any information they are urged to contact South Yorkshire Police on 101 quoting incident number 377 of Tuesday 17 July.