A collection of rare banknotes donated to a charity shop in Edinburgh has sold for more than £85,000 at auction.
Almost 160 notes from around the world were donated in albums to the British Heart Foundation (BHF) shop at Straiton Retail Park.
Shop volunteers noticed the potential significance of the collection and it was passed on to specialist auction house Noonans.
The auction raised £85,860 to support BHF's work researching heart and circulatory diseases, with Noonans also waiving its vendor commission.
The collection featured specimen and trial banknotes including a rare uncirculated note with a portrait of a young Queen Elizabeth II, issued by the board of commissioners of currency for Malaya and British Borneo.
Other highlights included an extremely rare 1947 Iraqi 10 dinars colour trial and a 1961 specimen 100 riyal note from Saudi Arabia.
Shop manager David McCormack said: "When the donation came into the shop, we all looked through the folders but didn't know much about the banknotes, so we sent them to our eBay team in Leeds to investigate.
"When we discovered their potential value, we were flabbergasted.
"It's incredibly exciting to see a donation received by your shop raise such a significant amount for the charity, and we're so proud the donor chose to give the collection to us."
Allison Swaine-Hughes, chief commercial officer at the BHF, said the charity was "absolutely thrilled".
She added: "We are incredibly grateful to the donor who chose to entrust these remarkable banknotes to us, and to our brilliant shop team in Edinburgh who recognised that there was something very special about this donation.
"It's wonderful to think that a collection generously handed into one of our charity shops can go on to raise such a fantastic amount for lifesaving research."
Andrew Pattison from Noonans said it was a "great privilege to handle this exceptional group of specimens and trials" for the BHF.
"Material of this quality is extremely rare and collectors all over the world have responded extremely well, with many of the notes selling for that little bit more than normal on account of the charitable nature of the sale," he added.