Shopkeepers and businesses in Ross-shire have been warned to be on the lookout for counterfeit bank notes in circulation.
Police have issued an appeal after reports of a number of forged £10 notes depicting the Glenfinnan Viaduct on the rear.
A police spokeswoman said that the notes can be identified by checking the security features found in a genuine bank note, including the watermark to the right of the note which is incorrect on the false notes.
On real notes there is a metallic security thread on the front of the note.
This appears as a series of silver foil rectangles on the surface of the note that become a solid line when the note is held up to the light.
These particular counterfeit £10 notes have no watermark and the window security thread is just a series of silver rectangles applied to the surface of the note.
The spokeswoman said: “If you check the suspect counterfeit note against a known genuine the differences will be readily apparent.
“Any person coming in possession of these notes should contact police on telephone 101.
“Anyone with information about people passing or making counterfeit bank notes are urged to contact police on 101 or confidentially through Crimestoppers on 0800 555 111.”