Gold link Bracelet stamped 14A with a barred I

by Nicole
(Tacoma wa.)

Found a gold bracelet with chain safety catch garnets mounted in a line down the middle. It's stamped 14A with a barred capital letter I or 3 tally marks with a line through the middle staped inside of an octagon shape. Who makes that and is it real? What is 14A? I know what 14k is but never have seen 14A before.