The central panel of an altarpiece. In its style of elongated forms and rich colouring we can see characterisitics of the so-called International Style, with a clear tendency to the affectation of the forms, especially notable in feet and hands. The two Saint Johns appear with their habitual attributes: the Mystic lamb for the Baptist and the goblet with the dragon for the Evangelist. Between them, and on a very reduced scale, the figure of the donor.