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14-year-old boy discovers medieval sword pommel

Lucas holds the sword pommel as he stands next to his dad Dave, who is wearing a pair of headphonesMolly Smith/BBC

Lucas said he was "overwhelmed and proud" after finding the medieval artefact

A 575-year-old sword pommel has been found by a teenager with a metal detector.

Lucas, who is 14-years-old, made the amazing discovery when he went to a dig in a field in North Yorkshire with his dad, Dave.

A pommel is the heavy metal knob that would have been fixed to the end of a sword's handle. They were used to balance out the weight of a sword, making it easier to swing and stopping it from sliding out of the hand.

The pommel Lucas found has lots of detailed engravings and 26 sides!

Lucas said he was "overwhelmed and proud" to have made the exciting find.

A pair of hands holding a small metal ball covered in lots of detailed engravingsMolly Smith/BBC

The pommel is made of a copper alloy and has 26 sides

The Portable Antiquities Service - which records archaeological objects found by the public - said that the pommel was from between AD1350 and 1450.

Even though Lucas would love to keep his discovery, his dad Dave said it belonged in a museum.

Dave said everyone they meet on digs think it's "absolutely amazing".

He added: "Lucas is a Brazilian jiu jitsu fighter and he found a warrior's sword that had been buried for hundreds of years."

Have you ever gone metal detecting or made a special discovery? Let us know in the comments...