Monday Mystery Artifact

This week we've got a tricky one--something that, unlike last week's wooden darning egg, is really not used at all anymore. Take a peek, and your best guess!

Mystery Artifact bonus: Unemployed "metal detectorist," after being jeered at by countrymen ("Beep beep, he's after pennies!") finds hoard of priceless 7th-century Mystery Artifacts with his trusty Metal Detector, not unlike Dusty D's own!