Gold ring with sapphire centerpiece, found near Heartland Town Center

I found a gold ring this afternoon around 1:30pm in the parking lot behind Heartland Town Center in Heartland, Florida, near the fountain by the Blue Finch Cafe on Palm Street. It's a slender 14k gold band, about 1.8 mm wide, with a small round sapphire in a clean bezel setting. The inside is engraved with 'M.J. 1912,' which is a tiny clue. The ring looks well cared for but shows a few micro-scratches from daily wear. If the owner sees this, describe the engraving or the color of the sapphire to claim it; I'd love to help get it back to you.