By Linda Serck
BBC Berkshire reporter
A Pathe news clip of the first Windsor pavement clock, filmed on 15 May 1950
A new pavement clock, thought to be the only one in Britain, has been installed in a Windsor street.
A time capsule has also been placed underneath the new landmark, containing current information, a film clip and images of the town.
The original was placed in 1950 by jeweller and clockmaker Sir Cyril Dyson outside his premises, but mysteriously disappeared some 40 years later.
Cllr Colin Rayner said: "Windsor can again boast a really special feature."
Cllr Rayner, Windsor and Maidenhead's lead member for highways and streetcare, said the whereabouts of the original clock is unknown.
The new pavement clock was unveiled on Friday 28 January
It is thought to have been removed for maintenance work after Dyson & Sons, who were clockmakers to the Queen, closed in the late 1980s.
Items inside the time capsule include an annual visitor guide, images from all the major events in the town centre, a brochure of the Windsor Horse Show and a film clip on a chip.
Cllr Rayner said: "In 50 years' time when they have to maintain the clock for the first time they'll see what Windsor life was like in 2010 and 2011."
Caroline Fox, the granddaughter of Sir Dyson, said she felt "very emotional" seeing the new pavement clock.
She said: "I think my dad would be very pleased. It's a wonderful thing and I'm very pleased it's being done."
She puts her grandfather's idea down to clever piece of marketing.
"I think it was just a quirky thing to get themselves noticed," she said. "Back in the day everyone knew it was Dyson's - the firm with the clock in the pavement".
The clock was unveiled by Mayor Cllr Catherine Bursnall at an official ceremony on Friday 28 January 2011.