Design for an altarpiece showing the Baptism of Christ, God the Father and the Holy Spirit

Italian School, late 16th Century Design for an altarpiece showing the Baptism of Christ, God the Father and the Holy Spirit with number '207' (?) in a box (recto) and '821' (verso) pen and brown ink, brown wash, watermark mountains surmounted by a crescent and cross (cf. Briquet 11947, Lucca, datable 1589-1598) 13 7/8 x 9 5/8 in. (35.3 x 24.3 cm)