The names of the saints, Bartholomew & Catherine, are on a cartellino (or small paper) painted on the gold background. Saint Catherine stands by the wheel on which she was tortured & Saint Bartholomew holds a flaying knife, the instrument of his martyrdom. The panel was the right-hand panel of a triptych, or possibly a polyptych. Once catalogued as Florentine School, the panel is now attributed to Francescuccio Ghissi & Allegretto Nuzi on the basis of the decorative punchwork which is similar to that on other works associated with Allegretto.