Annica Winhagen said she discovered the bottled message, which was written in a child's handwriting, while sailing with her husband off the coast of Bonhamn, The Local reported Friday.
"Hi the one who finds the message in the bottle send a letter I like post cards," the message read.
Winhagen said she was surprised to recognize the name of the sender, Josefin Grund, as the daughter of a former work colleague.
"It wasn't just that is was so old that was exciting, but that I actually knew the person who had sent it," Winhagen said. "I had worked with her mother when she was just a little girl."
Winhagen said she got in contact with Grund's mother, who in turn contacted her daughter, who now lives in Stockholm.
"I thought about it for a while, and then I remembered sending the message. I was eight, about to turn nine," said Grund, 31.