One of the TAVERN PUZZLEs® by Tucker-Jones House. The objective is to remove the heart. This is advertised as "simple" by Tucker-Jones.
A basic design element in this puzzle is the heart with the deep notch. The loop formed by the deep notch will fit through the eyes in the "U' shaped piece far enough to allow it to fit over the end of the protruding piece. This design is well over one hundred years old. See Double Bypass and Sweetheart for other examples of this basic design element.
TAVERN PUZZLE is a registered trademark of Tucker-Jones House, Inc.