Judy Murray has unveiled a stamp of her son Andy winning Wimbledon on the postbox painted gold in his honour in his home town.

It is one of 50 plaques being installed on postboxes across the UK to mark the 50th anniversary of Royal Mail's special stamp programme.

The plaque installed in Dunblane today features a picture of Murray winning Wimbledon in August 2013, the first time a Briton had won the men's singles title in 77 years.

A mini-sheet of special stamps was issued that month to celebrate his achievement.

The plaque has been installed on the High Street postbox which Royal Mail painted gold to honour Murray's victory over Roger Federer in the London 2012 Olympics final.

His mother said: "I'm thrilled to unveil the plaque of Andy's stamp on the gold postbox on Dunblane High Street. The postbox has become a real tourist attraction and has brought many visitors into the town.

"I know that Andy was delighted to be featured on a stamp, and it's lovely that Royal Mail has again chosen to honour Andy's achievements in Dunblane, where he continues to have so much support from the local community."

Each of the 50 plaques features a popular stamp that has a special connection with the UK city, town or village in which it is located.

Other stamps on postboxes include Sir Winston Churchill, Bagpuss, Dylan Thomas, Robert Burns, the Giant's Causeway, York Minster and Sherlock Holmes.

Jason Conry, Royal Mail delivery office manager for Dunblane, said: "The UK's towns and cities have influenced stamp designs over the past 50 years.

"We are proud that one of our postboxes in Dunblane features the stamp of Andy Murray. We hope that all our customers and visitors enjoy this special stamp plaque and might even take a photo as a memento."

The Royal Mail modern stamp programme has featured a total of 2,663 special stamps since July 1965 and every new stamp design is approved by the Queen before it is issued.