A spokesperson for Safer Communities said: “Please remain vigilant and take time to thoroughly check all bank notes offered as payment, particularly if they are of high value or being used to pay for minor items which will generate lots of change.
Dumbarton High Street, where traders have been asked to look out for fake notes.
“Retailers can take simple steps to avoid being scammed by using items such as detector pens and UV scanners, both of which can increase the chance of identifying the note as counterfeit prior to the transaction being completed. If you are unsure if the note is genuine then do not accept it or get a colleague to check it.”
“Anyone who deliberately uses counterfeit currency is committing a crime and we will investigate all instances reported to us.”
Anyone who has concerns about counterfeit currency should contact police on 101 or Crimestoppers on 0800 555 111 where anonymity can be maintained.