Stunning medieval ring found below rubble at 'historically important' tourist site

"For centuries the residence of kings and the symbol of Polish statehood, the castle is now one of the country's premier art museums," the website states.

Historians estimate that the piece of jewelry dates back to the 15th or 16th centuries. 

A local archaeologist named Konrad Jurkowski found the ring, according to castle officials.

"It was found while sifting through the rubble fill from inside the monument's pedestal," the post, which was translated from Polish to English, read.

Pictures posted by Wawel Royal Castle show the intricate details of the ring, as well as the rubble-filled chamber that it was found in. 

In one close-up photo, the mysterious symbols on the ring are clearly visible.

"The signet ring features an oval shield," the Facebook post noted.

"A symbol is visible on it, possibly a craftsman's mark, located on a German-type heraldic shield. "

The statement added, "The letters IC (initials?) are also visible. The item has a surface decorated with transverse grooves."

The latest discovery is one of several historical finds in the past year.