Husband and wife Rob and Caroline Wilkins, who now live at the Percys’ old address, were stunned when they checked the postmark on the back of the card.
Microwave engineer Mr Wilkins said: “It is definitely a case of ‘snail mail’ – a snails travel at 0.03mph so in 35 years a snail could have got to Australia.
“What tickled me is how fast a snail actually travels. It’s about 20 times faster than that postcard.”
He added: “It’s not in bad condition for its age. It does look a bit old.
“It must have been stuck behind a machine or something in the sorting office – then the machine has been moved and it’s been sent out.”
A Royal Mail spokesperson said: “It is difficult to speculate on what may have happened to this item of mail.
“But it is likely that it was put back into the postal system by someone recently, rather than it being lost or stuck somewhere.”
The postcard is addressed to a Dr and Mrs DB Percy, with the postmark of August 1983.
Iain Percy OBE, who grew up in the house the postcard was sent to, won gold
in the Finn class at the 2000 Olympic Games in Sydney, Australia.
He won gold again at the 2008 Olympics in Beijing, this time in the Star class, teaming up with Andrew Simpson.
The same pair won silver at the 2012 Olympics in London.
Percy, who has also won multiple world championship titles, was appointed Member of the Order of the British Empire in 2005 in recognition of his Olympic wins. He was appointed Officer of the Order of the British Empire in the 2009 New Year’s Honours List.
Source : EXPRESS