Branding of a funeral director responsible for transporting the late Queen's body from Balmoral to Edinburgh mysteriously vanished midway through the journey on Sunday.
William Perves displayed its logo on the hearse in front of the coffin when it left Balmoral just after 10am on the six-hour journey to Edinburgh.
The advertisement, which appeared to be a window sticker, was still visible as the hearse drove through Aberdeen at 1.05pm.
But by the time the vehicle reached Dundee at 3.15pm, the logo had gone.
It is understood that during that period, the vehicle was refueled.
The company's website crashed on Sunday after television viewers spotted the branding.
It was displayed on both sides of the hearse transporting the Queen's coffin as it made its way from Balmoral to Holyroodhouse, the official royal residence in Scotland.
The coffin will be flown to RAF Northolt in London on Tuesday.
The business has remained in the same family since its founding in the Victorian era. William Purves was set up by a craftsman and cabinet-maker from the Borders. The business has remained in the same family for five generations and has expanded across Scotland and north east England.
Mr Purves started his career as a joiner and by the end of the 19th Century, he and his 10 joiners undertook cabinet making, French polishing, upholstering and undertaking.
By the early 1900s, his son Willie became the second generation to carry on the family business.
Willie's son John, also known as Jack, worked alongside his father until his death in 1962. John opened a funeral office with rest rooms, a service chapel and bought the first hearse - an Austin three-litre - and Daimler funeral cars.
His son John, became the fourth generation to take over the company when his father died in 1975. Tim Purves, now chairman, is the fifth generation leader.
Its website reads: "The company continues to uphold core values of compassion, dedication, integrity and respect. The 'William Purves family' today comprises over 100 staff including great-great-grandchildren of the founder."
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