1933 75c carmine, lower left sheet corner margin vertical pair, bottom stamp variety double impression, top stamp with slight overinking, l.h., error n.h., v.f., signed Bolaffi and Diena, with his 1986 certificate (Sass. PA9+9a) cat. €18000 (Cat No. C9var) (Image)

Cat. €18000, Est.US$2,500