Antique Italian Miniature Painting on Porcelain RAPHAEL Madonna della Seggiola. Antique Italian Oval Miniature Painting on Porcelain – After Raffaello/Raphael. Subject is: “Madonna della Seggiola (Sedia)”. Back of porcelain is stamped “Firenze”. See images below the description. This offering is for a beautifully hand-painted antique miniature painting on porcelain. Size: 3 1/2 x 2 13/16 [Continue]