In the summer, there's a small bit of fraud that comes back to haunt us just like a bad penny; a dud coin in change.
At this time of year, people spend more in strange surroundings and are generally much more relaxed, so aren't paying much attention to what they are being handed back after making a purchase.
The National Police launched a warning over its Twitter account on Wednesday to residents and holidaymakers about checking their change in euros.
The message says that change given out in shops, bars or restaurants may have lookalike coins from the currency from a different country, and the coins could be worth much less. Examples of coins similar to the euro from Turkey and Jamaica, but of lesser value, were shown.