The sign, which reads "Welcome to Key West" on one side, and "Come Back Soon" on the other, had gone missing last month, presumably due to Hurricane Irma. It had been replaced with a temporary sign while the Rotary Club asked for help finding the original.
According to Key West Express, the mystery couple showed up at their docks Thursday morning wanting to transport a "package" to the island. It turned out to be the sign, which was sent on the ferry to be returned to the Rotary Club.
It's unclear how the sign found its way to Fort Myers.