1958, Dome of St. Peter's Basilica, 500L green and blue green, perforation 14, unfolded block of four, usually centered to the top, fresh colors and paper, full OG, NH, VF and extremely rare, only a few blocks survived, E. Diena certificate, C.v. $16,000 as singles, Sassone #A33/1, €28,500, Est. $5,000-$6,000
1. Worldwide Air Post Stamps and Postal History Vatican City - Air Post stamps |