Iron Crown of Lombardy

is so called from a narrow band of iron within it, said to be beaten out of one of the nails used at the Crucifixion. This band is about three-eighths of an inch broad, and one-tenth of an inch in thickness. According to tradition, the nail was first given to Constantine by his mother, who discovered the cross. The outer circlet of the crown is of beaten gold, and set with precious stones. The crown is preserved with great care at Monza, near Milan; and Napoleon, like his predecessor Charlemagne, was crowned with it.