Stained glass bought for 20 'may have belonged to Robert the Bruce'

"Measuring roughly 1.5ft in diameter, the piece features intricate sections of vibrant blues, reds and yellows that appear to depict a knight on a horse holding a shield. Meanwhile, a Latin inscription going around the edges roughly translates to 'Robert Bruce, King of the Scots'. Mr Drummond called the 'stunning' and 'well-preserved' stained glass a piece of 'medieval art' and 'medieval Scottish history'."

"'It could be priceless. If this is proven to be of that period it's a massive historical find for Scotland,' he said. The glass appears on an upcoming episode of the BBC's The Bidding Room - where experts confirmed it could be up to 700 years old. Mr Drummond was told it had been discovered in an old house in the area and abandoned for years before being put up for sale."

"Once he got it home, he began cleaning off dirt and grease with bicarbonate soda and vinegar to reveal the stunning colours underneath. 'Once I revealed some of the artwork from underneath, I stopped using that,' he said. 'I used a bit of water and cleaned it off with a brush, then I could see it said "Robert Rex Scotorum" - that's when I thought this was going to be interesting."

Richard Drummond paid just £20 at a charity shop in Moffat for a circular stained glass roundel about 1.5ft in diameter depicting a knight on horseback and a shield. A Latin inscription around the edge roughly translates to 'Robert Bruce, King of the Scots'. Mr Drummond cleaned away dirt to reveal vibrant colours and sought the opinion of local and international experts. Experts on a BBC programme suggested the piece could be up to 700 years old. Mr Drummond believes it may have been installed in a castle linked to Robert the Bruce and views it as a significant medieval Scottish artefact. Research and authentication are ongoing.

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