Father and son from South Paul Elliott and his son Jye Elliot have found the letter from his son Paul Gilmore, 13 years old, dropped into the sea since 1969.

Both found the bottle on the west coast of Eyre Peninsula recently while fishing, the AP reported on July 17.

Elliot said he was looking for the owner of the letter, Paul Gilmore, who wrote in the letter a 13-year-old boy . Paul Gilmore was on the train from Fremantle to Melbourne along the southern coast of Australia.

The message was written on paper by Sitmar Line, a yacht company. The upper right corner has a topic dated November 17, 1969.

The content of the letter wrote that the young man was traveling on Fairstar, the ship carrying many British immigrants to Australia in the 1960s. Gilmore described his position 1,600 km from Fremantle.

Boy Paul Gilmore called on anyone who found the letter to answer him and leave an address in Melbourne.

On July 11, ABC announced that Elliot and his father had found Gilmore’s sister, Annie Crossland.

"It’s great. I can’t believe it," Mrs. Crossland told ABC from England . "He will be very happy."

She said her brother was sailing on the Baltic Sea.

"The last time he took the train was probably to Australia," she said.

The letter, found after more than 50 years, is tattered but still carries enough messages inside. Facebook / ABC Adelaide .

According to Guardian , Crossland was also on board and witnessed her brother write letters and put them in bottles. The young Paul Gilmore dropped about six bottles of mail into the sea.

ABC believes the found bottle was released at the end of the journey between Fremantle and Melbourne.

Paul Gilmore’s family lived in Australia until 1973, before returning to the United Kingdom.

Oceanographer David Griffin said the bottle could not float on the sea for 50 years because the ocean "never remained silent".

Mr. Griffin doubted the letterbox was buried under the seabed for many years, then floated to the surface by a storm.