From the Smithsonian:
Andrew Leaper, a Scottish skipper, has discovered the world’s oldest message in a bottle. He found the bottle while on the same fishing vessel where another mate had set the previous record, for a bottle that had been floating in the ocean for 92 years and 229 days. Now, Leaper has broken his buddy’s Guinness World Record: his discovery turned out to be a 98-year old message in a bottle.
If you follow the BBC link, the message was ‘return to sender’ with a reward of six-pence. Was that a lot of money in 1914?