on piece An outstanding piece from a registered cover bearing 5c. green with overprint at top, Victor Emmanuel laureated 45c. olive green with 30c. Express Letter in blue and rose, tied by Italian Post Office c.d.s. and showing part of the registration handstamp at left. A rare and remarkable piece, both the 30c. and 45c. are believed to be unique. Enzo Diena Certificate (1988). Photo