Redditor gap343 found a found a message in a bottle on Floreana Island in the Galapagos that dates back to 1924! See the full post HERE. Another Redditor was able to transcribe the message which is as follows:
"Hugh Craggs, Yacht St George RTYC
Any finder please enclose message bearing date, name of finder, of ship, destination, and send a postcard to
Hugh Craggs 50 Ruskin Ave Manor Park London E. 12
Buried at the foot of post office bay, post office barrel, Floreana Island, Galapagos, Aug 1st 1924"
You can read the top level comments from Reddit below!