The Ognissanti Crucifix, be-lieved to be the work of early Renaissance artist Giotto, was presented to the press after undergoing an extensive restoration, in a lab in Florence, Italy.

The crucifix, which normally hangs in Florence’s Ognissanti church, had been attributed to “a relative of Giotto” until just over a year ago when researchers questioned the attribution after a cleaning of the paintwork.

Further noninvasive studies by the Florentine lab Opificio delle Pietre Dure, including an infrared reflectography test, revealed preparatory drawings underneath the painting which allowed experts to finally attribute the work to the 14th century artist.