With inscription del Cave. Franco. Vanni on the mount, red chalk, watermark figure within a shield, pen and brown ink framing lines
312 x 226 mm. (12 1/4 x 8 7/8 in.)
This is catalogue Number 20, in the on-line e-catalogue of 'Drawings, Prints and Paintings from the Collection of Professor Raymond E. Pahl, FBA (1935-2011)', see here for the catalogue.